3-substituted cyclopentylamine derivatives

ABSTRACT

Compounds of the formula I 
     
       
         
         
             
             
         
       
     
     in which R, W, R 1 , R 4 , X 1 , X 2 , X 3 , X 4  and q have the meanings indicated in Claim  1,  
 
are inhibitors of fatty acid synthase, and can be employed, inter alia, for the treatment of diseases such as cancer, cardiovascular diseases, central nervous system injury and different forms of inflammation.

TECHNICAL FIELD OF THE INVENTION

The present invention relates to novel 3-substituted cyclopentylamine derivatives which inhibit the activity of fatty acid synthase (FASN; also abbreviated as FAS), to pharmaceutical compositions comprising them, to processes for their preparation, and to their use in therapy for the treatment of cancers.

BACKGROUND OF THE INVENTION

Fatty Acid Synthase (FAS) is a critical enzyme for endogenous lipogenesis and plays an important role in the modulation of key intermediates of lipid and carbohydrate cellular metabolism. FAS is highly expressed in the tissues with high metabolic activity (for example liver, adipose tissue and brain) and there are good reasons to believe that a FAS inhibitor would cause beneficial metabolic effects in peripheral tissues. In addition, inhibition of FAS in the hypothalamus may result in reduced food intake. The non-specific irreversible FAS inhibitors cerulenin and C-75 have been reported in the literature to decrease brain levels of orexigenic neuropeptides and to decrease food intake.

FAS is also highly expressed in human sebocytes, the lipid producing cells of the sebaceous glands. Acne is the most common disorder involving the sebaceous gland. The pathogenesis of acne involves lipid (over)production by the sebaceous gland and it has been reported that inhibitors of mammalian FAS inhibit the production of sebum in sebocytes (US 2005/0053631). Acne cannot occur without sebum lipids. There is an unmet medical need in the treatment of acne for agents that reduce sebum production.

Since fatty acid synthesis in bacteria is essential for cell survival, bacterial FAS (type II synthase) has emerged as a potential target for antibacterial therapy. Unlike in most other prokaryotes, fatty acid synthase activity in mycobacteria is carried out by a single high-molecular-weight, multifunctional peptide chain (type I synthase) related to mammalian FAS. Mycobacterial type I FAS has been described as a potential target for antimycobacterial therapy, e.g. the treatment of tuberculosis. With one-third of the world's population being infected with the tuberculosis bacillus, and multidrug-resistant strains of Mycobacterium tuberculosis developing, there is a high medical need for novel tuberculosis therapies. (Silvana C. Ngo, et al.: Inhibition of isolated Mycobacterium tuberculosis Fatty Acid Synthase I by Pyrazinamide Analogs; Antimicrobial agents and Chemotherapy 51, 7 (2007) 2430-2435).

Recently, microdomains of organelle membranes rich in sphingomyelin and cholesterol (called “lipid rafts”) have been considered to act as a scaffold for the hepatitis C virus (HCV) replication complex (F. Amemiya, et al.: Targeting Lipid Metabolism in the Treatment of Hepatitis C Virus Infection. The Journal of Infectious Diseases 197 (2008) 361-70). Consequently, alterations of membrane lipid composition and/or distribution may influence viral replication. Indeed, agents related to lipid metabolism like polyunsaturated fatty acids or HMG-CoA reductase inhibitors (statins) have been shown to affect the replication of genotype 1 HCV (dto). These agents may attenuate HCV replication through the destruction of lipid rafts, according to their pharmacological actions. An alternative molecular mechanism possibly responsible for the inhibition of HCV replication is via altering localization of host proteins through alterations in lipid anchoring (S. M. Sagan, et al.: The influence of cholesterol and lipid metabolism on host cell structure and hepatitis C virus replication. Biochem. Cell Biol. 84 (2006) 67-79). Unlike polyunsaturated fatty acids, addition of saturated fatty acids or oleic acid to cultured Sfil cells promoted HCV RNA replication (S. B. Kapadia, F. V. Chisari: Hepatitis C virus RNA replication is regulated by host geranylgeranylation and fatty acids. PNAS 102 (2005) 2561-66). In line with this, it has been reported that expression of fatty acid synthase was increased in a human hepatoma cell line upon HCV infection (W. Yang, et al.: Fatty acid synthase is up-regulated during hepatitis C virus infection and regulates hepatitis C virus entry. Hepatology 48, 5 (2008) 1396-1403). Furthermore, inhibition of fatty acid biosynthesis by TOFA (an inhibitor of acetyl-CoA carboxylase) or inhibitors of fatty acid synthase (cerulenin, C75), led to decreased HCV production (dto).

The effect of fatty acid synthase (FAS) activity on viral replication or infection appears not to be restricted to HCV, but has also been reported for HIV (D. H. Nguyen, D. D. Taub: Targeting Lipids to Prevent HIV infection. Molecular Interventions 4, 6 (2004) 318-320), Poliovirus (R. Guinea, L. Carrasco: Effects of Fatty Acids on Lipid

Synthesis and Viral RNA Replication in Poliovirus-Infected Cells. Virology 185 (1991) 473-476), Epstein-Barr virus (Y. Li., et al.: Fatty acid synthase expression is induced by the Epstein-Barr virus immediate-early protein BRLF1 and is required for lytic viral gene expression. Journal of Virology 78, 8 (2004) 4197-4206), human papilloma virus (L. Louw, et al.: HPV-induced recurrent laryngeal papillomatosis: fatty acid role-players. Asia Pac J Clin Nutr 17 (S1) (2008) 208-211), coxsackievirus B3 (A. Rassmann, et al.: The human fatty acid synthase: A new therapeutic target for coxsackievirus B3-induced diseases? Antiviral Research 76 (2007) 150-158), Rous sarcoma virus (H. Goldfine, et al.: Effects of inhibitors of lipid synthesis on the replication of Rous Sarcoma Virus. A specific effect of cerulenin on the processing of major non-glycosylated viral structural proteins. Biochimica et Biophysica Acta 512 (1978) 229-240), as well as human cytomegalovirus (HCMV), and influenza A virus (J. Munger, et al.: Systems-level metabolic flux profiling identifies fatty acid synthesis as a target for antiviral therapy. Nature Biotechnology 26 (2008) 1 179-1 186).

Taken together, there is growing evidence, that activity of the host's FAS plays an important role in viral infection and viral replication, suggesting FAS as a target for antiviral therapy. The expression of FAS is strongly increased in many cancers and there is evidence that efficient fatty acid synthesis is required for tumor cell survival. Inhibition of FAS has therefore been suggested as a new direction for oncology (Expert Opin. Investig. Drugs 16, 1 (2007)1817-1829).

Fatty acids have an essential role in a variety of cellular processes including building blocks for membranes, anchors for targeting membrane proteins, precursors in the synthesis of lipid second messengers and as a medium to store energy, Menendez J S and Lupu R, Fatty acid synthase and the lipogenic phenotype in cancer pathogenesis, Nature Reviews Cancer, 7: 763-777 (2007). Fatty acids can either be obtained from the diet or can be synthesized de novo from carbohydrate precursors. The biosynthesis of the latter is catalyzed by the multi-functional homodimeric FAS. FAS synthesizes long chain fatty acids by using acetyl-CoA as a primer and Malonyl Co-A as a 2 carbon donor, and NADPH as a reducing equivalents (Wakil S J, Lipids, Structure and function of animal fatty acid synthase, 39: 1045-1053 (2004), Asturias F J et al., Structure and molecular organization of mammalian fatty acid synthase, Nature Struct. Mol. Biol. 12:225-232 (2005), Maier T, et al., Architecture of Mammalian Fatty Acid Synthase at 4.5 A Resolution, Science 311: 1258-1262 (2006).

De novo fatty acid synthesis is active during embryogenesis and in fetal lungs where fatty acids are used for the production of lung surfactant. In adults, most normal human tissues preferentially acquire fatty acids from the diet. Therefore, the level of de novo lipogensis and expression of liopogenic enzymes is low, Weiss L, et al, Fatty-acid biosynthesis in man, a pathway of minor importance. Purification, optimal assay conditions, and organ distribution of fatty-acid synthase. Biological Chemistry Hoppe-Seyler 367(9):905-912 (1986). In contrast, many tumors have high rates of de novo fatty acid synthesis Medes G, et al, Metabolism of Neoplastic Tissue. IV. A Study of Lipid Synthesis in Neoplastic Tissue Slices in Vitro, Can Res, 13:27-29, (1953). FAS has now been shown to be overexpressed in numerous cancer types including prostate, ovary, colon, endometrium lung, bladder, stomach and kidney Kuhajda F P, Fatty-acid synthase and human cancer: new perspectives on its role in tumor biology, Nutrition; 16:202-208 (2000). This differential expression and function of FAS in tumors and normal cells provide an approach for cancer therapy with the potential of a substantial therapeutic window.

Pharmacological and small interference RNA mediated inhibition of FAS has demonstrated a preferential inhibition of cancer cell proliferation. Additionally these inhibitors induce apoptosis in cancers cells in vitro and retard growth in human tumors in murine xenograft models in vivo, Menendez J S and Lupu R, Nature Reviews Cancer, 7: 763-777 (2007). Based upon these findings, FAS is considered a major potential target of antineoplastic intervention.

The invention had the object of finding novel compounds having valuable properties, in particular those which can be used for the preparation of medicaments.

It has been found that the compounds according to the invention and salts thereof have very valuable pharmacological properties while being well tolerated.

The present invention specifically relates to compounds of the formula I which inhibit FASN, to compositions which comprise these compounds, and to processes for the use thereof for the treatment of FASN-induced diseases and complaints.

The compounds of the formula I can furthermore be used for the isolation and investigation of the activity or expression of FASN. In addition, they are particularly suitable for use in diagnostic methods for diseases in connection with unregulated or disturbed FASN activity.

The host or patient can belong to any mammalian species, for example a primate species, particularly humans; rodents, including mice, rats and hamsters; rabbits; horses, cows, dogs, cats, etc. Animal models are of interest for experimental investigations, providing a model for treatment of human disease.

The susceptibility of a particular cell to treatment with the compounds according to the invention can be determined by in vitro tests. Typically, a culture of the cell is combined with a compound according to the invention at various concentrations for a period of time which is sufficient to allow active agents such as anti IgM to induce a cellular response such as expression of a surface marker, usually between about one hour and one week. In vitro testing can be carried out using cultivated cells from blood or from a biopsy sample.

The amount of surface marker expressed is assessed by flow cytometry using specific antibodies recognising the marker.

The dose varies depending on the specific compound used, the specific disease, the patient status, etc. A therapeutic dose is typically sufficient considerably to reduce the undesired cell population in the target tissue while the viability of the patient is maintained. The treatment is generally continued until a considerable reduction has occurred, for example an at least about 50% reduction in the cell burden, and may be continued until essentially no more undesired cells are detected in the body.

PRIOR ART

Cyclopentanecarboxamide derivatives are described in WO 2011/048018 A1 as FAS inhibitors for the treatment of obesity and diabetes.

Other carboxamide derivatives are described as FAS inhibitors in WO 2013/028445.

Other heterocyclic derivatives are described in WO2012/037298.

SUMMARY OF THE INVENTION

The invention relates to compounds of the formula I

in which

-   R denotes Ar or Het, —C≡C—Ar or —C≡C-Het, -   W denotes furanyl, thiophenyl, pyrrolyl, pyrazolyl, oxazolyl,     thiazolyl, triazolyl, oxadiazolyl or thiadiazolyl, each of which is     unsubstituted or mono- or disubstituted by R², -   R¹ denotes A, [C(R³)₂]_(n)Ar¹ or [C(R³)₂]_(n)Cyc, -   R² denotes A, [C(R³)₂]_(n)Ar¹, Cyc or ═O -   R⁴ denotes H, F, Cl, Br, OH, CN, NO₂, A′, OA′, SA′, SO₂Me, COA′,     CONH₂, CONHA′ or CONA′₂, -   X¹, X², X³, X⁴ each, independently of one another, denote CH or N, -   A denotes unbranched or branched alkyl with 1-10 C-atoms, wherein     two adjacent carbon atoms may form a double bond and/or one or two     non-adjacent CH- and/or CH₂-groups may be replaced by N-, O- and/or     S-atoms and wherein 1-7 H-atoms may be replaced by R⁵, -   Cyc denotes cycloalkyl with 3-7 C-atoms, which is unsubstituted or     monosubstituted by OH, Hal or A, -   A′ denotes unbranched or branched alkyl with 1-6 C-atoms, wherein     1-5 H-atoms may be replaced by F, -   R⁵ denotes F, Cl or OH, -   Ar denotes phenyl, which is unsubstituted or mono-, di-, tri-,     tetra- or pentasubstituted by Hal, A, O[C(R³)₂]_(n)Het¹, Ar¹,     [C(R³)₂]_(p)OR³, [C(R³)₂]_(p)N(R³)₂, NO₂, CN, [C(R³)₂]_(p)COOR³,     CON(R³)₂, [C(R³)₂]_(p)N(R³)₂, N(R³)₂COA, NR³SO₂A,     [C(R³)₂]_(p)SO₂N(R³)₂, S(O)_(n)A, O[C(R³)₂]_(m)N(R³)₂, NHCOOA,     NHCON(R³)₂ and/or COA, -   Ar¹ denotes phenyl or naphthyl, which is unsubstituted or mono-,     di-, tri-, tetra- or pentasubstituted by Hal, A, [C(R³)₂]_(p)OR³,     [C(R³)₂]_(p)N(R³)₂, NO₂, CN, [C(R³)₂]_(p)COOR³, [C(R³)₂]_(p)N(R³)₂,     N(R³)₂COA, NR³SO₂A, [C(R³)₂]_(p)SO₂N(R³)₂, S(O)_(n)A,     O[C(R³)₂]_(m)N(R³)₂, NHCOOA, NHCON(R³)₂ and/or COA, -   R³ denotes H or unbranched or branched alkyl with 1-6 C-atoms, -   Het denotes a mono- or bicyclic saturated, unsaturated or aromatic     heterocycle having 1 to 4 N, O and/or S atoms, which is     unsubstituted or mono-, di-, tri-, tetra- or pentasubstituted by     Hal, A, [C(R³)₂]_(n)OA′, [C(R³)₂]_(n)N(R³)₂, SR³, NO₂, CN, COOR³,     CON(R³)₂, COHet¹, NR³COA, NR³SO₂A, SO₂N(R³)₂, S(O)_(n)A,     O[C(R³)₂]_(m)N(R³)₂, NHCOOA, NHCON(R³)₂, CHO, COA, ═S, ═NH, ═NA     and/or ═O (carbonyl oxygen), -   Hal denotes F, Cl, Br or I, -   m denotes 1, 2 or 3, -   n denotes 0, 1 or 2, -   p denotes 0, 1, 2, 3 or 4, -   q 0, 1, 2 or 3,     with the proviso that only one or two of X¹, X², X³, X⁴ denote N,     and pharmaceutically acceptable salts, tautomers and stereoisomers     thereof, including mixtures thereof in all ratios.

The invention also relates to the optically active forms (stereoisomers), the enantiomers, the racemates, the diastereomers and the hydrates and solvates of these compounds.

Moreover, the invention relates to pharmaceutically acceptable derivatives of compounds of formula I.

The term solvates of the compounds is taken to mean adductions of inert solvent molecules onto the compounds which form owing to their mutual attractive force. Solvates are, for example, mono- or dihydrates or alkoxides. It is understood, that the invention also relates to the solvates of the salts. The term pharmaceutically acceptable derivatives is taken to mean, for example, the salts of the compounds according to the invention and also so-called prodrug compounds.

As used herein and unless otherwise indicated, the term “prodrug” means a derivative of a compound of formula I that can hydrolyze, oxidize, or otherwise react under biological conditions (in vitro or in vivo) to provide an active compound, particularly a compound of formula I. Examples of prodrugs include, but are not limited to, derivatives and metabolites of a compound of formula I that include biohydrolyzable moieties such as biohydrolyzable amides, biohydrolyzable esters, biohydrolyzable carbamates, biohydrolyzable carbonates, biohydrolyzable ureides, and biohydrolyzable phosphate analogues. In certain embodiments, prodrugs of compounds with carboxyl functional groups are the lower alkyl esters of the carboxylic acid. The carboxylate esters are conveniently formed by esterifying any of the carboxylic acid moieties present on the molecule. Prodrugs can typically be prepared using well-known methods, such as those described by Burger's Medicinal Chemistry and Drug Discovery 6th ed. (Donald J. Abraham ed., 2001, Wiley) and Design and Application of Prodrugs (H. Bundgaard ed., 1985, Harwood Academic Publishers Gmfh).

The expression “effective amount” denotes the amount of a medicament or of a pharmaceutical active ingredient which causes in a tissue, system, animal or human a biological or medical response which is sought or desired, for example, by a researcher or physician.

In addition, the expression “therapeutically effective amount” denotes an amount which, compared with a corresponding subject who has not received this amount, has the following consequence:

improved treatment, healing, prevention or elimination of a disease, syndrome, condition, complaint, disorder or side-effects or also the reduction in the advance of a disease, complaint or disorder.

The expression “therapeutically effective amount” also encompasses the amounts which are effective for increasing normal physiological function.

The invention also relates to the use of mixtures of the compounds of the formula I, for example mixtures of two diastereomers, for example in the ratio 1:1, 1:2, 1:3, 1:4, 1:5, 1:10, 1:100 or 1:1000.

These are particularly preferably mixtures of stereoisomeric compounds.

“Tautomers” refers to isomeric forms of a compound that are in equilibrium with each other. The concentrations of the isomeric forms will depend on the environment the compound is found in and may be different depending upon, for example, whether the compound is a solid or is in an organic or aqueous solution.

The invention relates to the compounds of the formula I and salts thereof and to a process for the preparation of compounds of the formula I and pharmaceutically acceptable salts, solvates, tautomers and stereoisomers thereof, characterised in that a compound of the formula II,

-   -   in which W and R¹ have the meanings indicated in Claim 1,     -   is reacted with a compound of the formula III

-   -   in which R, R⁴, X¹, X², X³, X⁴ and q have the meanings indicated         in Claim 1,     -   and L denotes Cl, Br, I or a free or reactively functionally         modified OH group,         and/or         a base or acid of the formula I is converted into one of its         salts.

Preferably, compounds of formula (I) are cis-konfigurated, such as in the following formula (Ia)

This means the cyclopentane preferably is 1,3-cis-disubstituted.

Above and below, the radicals R, W, R¹, R⁴, X¹, X², X³, R⁴ and q have the meanings indicated for the formula I, unless expressly stated otherwise.

Preferably only one or two of X¹, X², X³, X⁴ denote N.

X¹ particularly preferably denotes C.

X² particularly preferably denotes C.

X³ particularly preferably denotes C or N.

X⁴ particularly preferably denotes C.

A denotes alkyl, this is unbranched (linear) or branched, and has 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 C atoms. A preferably denotes methyl, furthermore ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl or tert-butyl, furthermore also pentyl, 1-, 2- or 3-methylbutyl, 1,1-, 1,2- or 2,2-dimethylpropyl, 1-ethylpropyl, hexyl, 1-, 2-, 3- or 4-methylpentyl, 1,1-, 1,2-, 1,3-, 2,2-, 2,3- or 3,3-dimethylbutyl, 1- or 2-ethylbutyl, 1-ethyl-1-methylpropyl, 1-ethyl-2-methylpropyl, 1,1,2- or 1,2,2-trimethylpropyl, furthermore preferably, for example, trifluoromethyl.

A preferably denotes unbranched or branched alkyl with 1-10 C-atoms, wherein 1-7 H-atoms may be replaced by R⁵.

A very particularly preferably denotes alkyl having 1, 2, 3, 4, 5 or 6 C atoms, preferably methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, hexyl, trifluoromethyl, pentafluoroethyl or 1,1,1-trifluoroethyl.

Moreover, A denotes preferably CH₂OCH₃, CH₂CH₂OH or CH₂CH₂OCH₃.

Cyc denotes cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl or cycloheptyl, preferably unsubstituted or monosubstituted by A.

A′ denotes alkyl, this is unbranched (linear) or branched, and has 1, 2, 3, 4, 5 or 6 C atoms. A′ preferably denotes methyl, furthermore ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl or tert-butyl, furthermore also pentyl, 1-, 2- or 3-methylbutyl, 1,1-, 1,2- or 2,2-dimethylpropyl, 1-ethylpropyl, hexyl, 1-, 2-, 3- or 4-methylpentyl, 1,1-, 1,2-, 1,3-, 2,2-, 2,3- or 3,3-dimethylbutyl, 1- or 2-ethylbutyl, 1-ethyl-1-methylpropyl, 1-ethyl-2-methylpropyl, 1,1,2- or 1,2,2-trimethylpropyl, furthermore preferably, for example, trifluoromethyl.

A′ very particularly preferably denotes alkyl having 1, 2, 3, 4, 5 or 6 C atoms.

R¹ preferably denotes A.

R¹ particularly preferably denotes methyl.

R² preferably denotes methyl, ethyl, propyl, isopropyl, butyl, cyclopropyl or 1-hydroxyethyl.

R³ preferably denotes H, methyl, ethyl, propyl, isopropyl, butyl, pentyl or hexyl, particularly preferably H or methyl.

R⁴ particularly preferably denotes H or methoxy.

R⁵ preferably denotes F, Cl or OH, particularly preferably OH.

Ar denotes preferably o-, m- or p-tolyl, o-, m- or p-ethylphenyl, o-, m- or p-propylphenyl, o-, m- or p-isopropylphenyl, o-, m- or p-tert-butylphenyl, o-, m- or p-hydroxyphenyl, o-, m- or p-nitrophenyl, o-, m- or p-aminophenyl, o-, m- or p-(N-methylamino)phenyl, o-, m- or p-(N-methylaminocarbonyl)phenyl, o-, m- or p-methoxyphenyl, o-, m- or p-ethoxyphenyl, o-, m- or p-ethoxycarbonylphenyl, o-, m- or p-(N,N-dimethylamino)phenyl, o-, m- or p-(N,N-dimethylaminocarbonyl)phenyl, o-, m- or p-(N-ethylamino)phenyl, o-, m- or p-(N,N-diethylamino)phenyl, o-, m- or p-fluorophenyl, o-, m- or p-bromophenyl, o-, m- or p-chlorophenyl, o-, m- or p-(methylsulfonamido)phenyl, o-, m- or p-(methylsulfonyl)phenyl, o-, m- or p-cyanophenyl, o-, m- or p-carboxyphenyl, o-, m- or p-methoxycarbonylphenyl, o-, m- or p-acetylphenyl, o-, m- or p-aminosulfonylphenyl, o-, m- or p-[2-(morpholin-4-yl)ethoxy]phenyl, o-, m- or p-[3-(N,N-diethylamino)propoxy]phenyl, furthermore preferably 2,3-, 2,4-, 2,5-, 2,6-, 3,4- or 3,5-difluorophenyl, 2,3-, 2,4-, 2,5-, 2,6-, 3,4- or 3,5-dichlorophenyl, 2,3-, 2,4-, 2,5-, 2,6-, 3,4- or 3,5-dibromophenyl, 2,4- or 2,5-dinitrophenyl, 2,5- or 3,4-dimethoxyphenyl, 3-nitro-4-chlorophenyl, 3-amino-4-chloro-, 2-amino-3-chloro-, 2-amino-4-chloro-, 2-amino-5-chloro- or 2-amino-6-chlorophenyl, 2-nitro-4-N,N-dimethylamino- or 3-nitro-4-N,N-dimethylaminophenyl, 2,3-diaminophenyl, 2,3,4-, 2,3,5-, 2,3,6-, 2,4,6- or 3,4,5-trichlorophenyl, 2,4,6-trimethoxyphenyl, 2-hydroxy-3,5-dichlorophenyl, p-iodophenyl, 3,6-dichloro-4-aminophenyl, 4-fluoro-3-chlorophenyl, 2-fluoro-4-bromophenyl, 2,5-difluoro-4-bromophenyl, 3-bromo-6-methoxyphenyl, 3-chloro-6-methoxyphenyl, 3-chloro-4-acetamidophenyl, 3-fluoro-4-methoxyphenyl, 3-amino-6-methylphenyl, 3-chloro-4-acetamidophenyl or 2,5-dimethyl-4-chlorophenyl.

Ar furthermore preferably denotes phenyl, which is unsubstituted or mono-, di-, tri-, tetra- or pentasubstituted by Hal and/or CN.

Ar particularly preferably denotes phenyl, which is unsubstituted or mono-, di-, or trisubstituted by Hal and/or CN.

Ar¹ preferably denotes phenyl or naphthyl.

Irrespective of further substitutions, Het denotes, for example, 2- or 3-furyl, 2- or 3-thienyl, 1-, 2- or 3-pyrrolyl, 1-, 2, 4- or 5-imidazolyl, 1-, 3-, 4- or 5-pyrazolyl, 2-, 4- or 5-oxazolyl, 3-, 4- or 5-isoxazolyl, 2-, 4- or 5-thiazolyl, 3-, 4- or 5-isothiazolyl, 2-, 3- or 4-pyridyl, 2-, 4-, 5- or 6-pyrimidinyl, furthermore preferably 1,2,3-triazol-1-, -4- or -5-yl, 1,2,4-triazol-1-, -3- or 5-yl, 1- or 5-tetrazolyl, 1,2,3-oxadiazol-4- or -5-yl, 1,2,4-oxadiazol-3- or -5-yl, 1,3,4-thiadiazol-2- or -5-yl, 1,2,4-thiadiazol-3- or -5-yl, 1,2,3-thiadiazol-4- or -5-yl, 3- or 4-pyridazinyl, pyrazinyl, 1-, 2-, 3-, 4-, 5-, 6- or 7-indolyl, 4- or 5-isoindolyl, indazolyl, 1-, 2-, 4- or 5-benzimidazolyl, 1-, 3-, 4-, 5-, 6- or 7-benzopyrazolyl, 2-, 4-, 5-, 6- or 7-benzoxazolyl, 3-, 4-, 5-, 6- or 7-benzisoxazolyl, 2-, 4-, 5-, 6- or 7-benzothiazolyl, 2-, 4-, 5-, 6- or 7-benzisothiazolyl, 4-, 5-, 6- or 7-benz-2,1,3-oxadiazolyl, 2-, 3-, 4-, 5-, 6-, 7- or 8-quinolyl, 1-, 3-, 4-, 5-, 6-, 7- or 8-isoquinolyl, 3-, 4-, 5-, 6-, 7- or 8-cinnolinyl, 2-, 4-, 5-, 6-, 7- or 8-quinazolinyl, 5- or 6-quinoxalinyl, 2-, 3-, 5-, 6-, 7- or 8-2H-benzo-1,4-oxazinyl, further preferably 1,3-benzodioxol-5-yl, 1,4-benzodioxan-6-yl, 2,1,3-benzothiadiazol-4-, -5-yl or 2,1,3-benzoxadiazol-5-yl, azabicyclo[3.2.1]octyl or dibenzofuranyl.

The heterocyclic radicals may also be partially or fully hydrogenated. Irrespective of further substitutions, Het can thus also denote, for example, 2,3-dihydro-2-, -3-, -4- or -5-furyl, 2,5-dihydro-2-, -3-, -4- or 5-furyl, tetrahydro-2- or -3-furyl, 1,3-dioxolan-4-yl, tetrahydro-2- or -3-thienyl, 2,3-dihydro-1-, -2-, -3-, -4- or -5-pyrrolyl, 2,5-dihydro-1-, -2-, -3-, -4- or -5-pyrrolyl, 1-, 2- or 3-pyrrolidinyl, tetrahydro-1-, -2- or -4-imidazolyl, 2,3-dihydro-1-, -2-, -3-, -4- or-5-pyrazolyl, tetrahydro-1-, -3- or -4-pyrazolyl, 1,4-dihydro-1-, -2-, -3- or -4-pyridyl, 1,2,3,4-tetrahydro-1-, -2-, -3-, -4-, -5- or -6-pyridyl, 1-, 2-, 3- or 4-piperidinyl, 2-, 3- or 4-morpholinyl, tetrahydro-2-, -3- or -4-pyranyl, 1,4-dioxanyl, 1,3-dioxan-2-, -4- or -5-yl, hexahydro-1-, -3- or -4-pyridazinyl, hexahydro-1-, -2-, -4- or -5-pyrimidinyl, 1-, 2- or 3-piperazinyl, 1,2,3,4-tetrahydro-1-, -2-, -3-, -4-, -5-, -6-, -7- or -8-quinolyl, 1,2,3,4-tetrahydro-1-, -2-, -3-, -4-, -5-, -6-, -7- or -8-isoquinolyl, 2-, 3-, 5-, 6-, 7- or 8-3,4-dihydro-2H-benzo-1,4-oxazinyl, furthermore preferably 2,3-methylenedioxyphenyl, 3,4-methylenedioxyphenyl, 2,3-ethylenedioxyphenyl, 3,4-ethylenedioxyphenyl, 3,4-(difluoromethylenedioxy)phenyl, 2,3-dihydrobenzofuran-5- or 6-yl, 2,3-(2-oxomethylenedioxy)phenyl or also 3,4-dihydro-2H-1,5-benzodioxepin-6- or -7-yl, furthermore preferably 2,3-dihydrobenzofuranyl, 2,3-dihydro-2-oxofuranyl, 3,4-dihydro-2-oxo-1H-quinazolinyl, 2,3-dihydrobenzoxazolyl, 2-oxo-2,3-dihydrobenzoxazolyl, 2,3-dihydrobenzimidazolyl, 1,3-dihydroindole, 2-oxo-1,3-dihydroindole or 2-oxo-2,3-dihydrobenzimidazolyl.

Het preferably denotes a mono- or bicyclic aromatic heterocycle having 1 to 4 N, O and/or S atoms, which is unsubstituted or mono- or disubstituted by Hal and/or [C(R³)₂]_(n)OA′.

Het furthermore preferably denotes furyl, thienyl, pyrrolyl, imidazolyl, pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridyl, pyrimidinyl, triazolyl, tetrazolyl, oxadiazolyl, thiadiazolyl, pyridazinyl, pyrazinyl, benzoxazolyl, benzothiazolyl, benzimidazolyl, benzotriazolyl, indolyl, benzo-1,3-dioxolyl, benzodioxanyl, benzothiadiazolyl, indazolyl, benzofuranyl, quinolyl, isoquinolyl, pyrrolo[2,3-b]pyridinyl, oxazolo[5,4-b]pyridyl, imidazo[1,2-a]pyrimidinyl or oxazolo[5,4-c]pyridyl, each of which is unsubstituted or mono- or disubstituted by Hal and/or [C(R³)₂]_(n)OA′.

Het furthermore preferably denotes furyl, thienyl, pyrrolyl, imidazolyl, pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridyl, pyrimidinyl, triazolyl, pyrrolo[2,3-b]pyridinyl, imidazo[1,2-a]pyrimidinyl, benzoxazolyl, benzothiazolyl or benzimidazolyl, each of which is unsubstituted or mono- or disubstituted by Hal.

Het furthermore preferably denotes a mono- or bicyclic aromatic heterocycle having 1 to 4 N, O and/or S atoms, which is unsubstituted or mono- or disubstituted by Hal.

Hal preferably denotes F, Cl or Br, but also I, particularly preferably F or Cl.

Throughout the invention, all radicals which occur more than once may be identical or different, i.e. are independent of one another.

The compounds of the formula I may have one or more chiral centres and can therefore occur in various stereoisomeric forms. The formula I encompasses all these forms.

Accordingly, the invention relates, in particular, to the compounds of the formula I in which at least one of the said radicals has one of the preferred meanings indicated above. Some preferred groups of compounds may be expressed by the following sub-formulae Ia to II, which conform to the formula I and in which the radicals not designated in greater detail have the meaning indicated for the formula I, but in which

-   in Ia X¹ denotes C,     -   X² denotes C,     -   X³ denotes C or N,     -   X⁴ denotes C; -   in Ib R¹ denotes A; -   in Ic R² denotes A or Cyc; -   in Id R² denotes methyl, ethyl, propyl, isopropyl, butyl,     cyclopropyl or 1-hydroxyethyl; -   in Ie R⁴ denotes H or OA′; -   in If R³ denotes H or methyl; -   in Ig A denotes unbranched or branched alkyl with 1-6 C-atoms,     wherein 1-7 H-atoms may be replaced by R⁵; -   in Ih Ar denotes phenyl, which is unsubstituted or mono-, di-, tri-,     tetra- or pentasubstituted by Hal and/or CN; -   in Ii Het denotes a mono- or bicyclic aromatic heterocycle having 1     to 4 N, O and/or S atoms, which is unsubstituted or mono- or     disubstituted by Hal and/or [C(R³)₂]_(n)OA′; -   in Ij Het denotes furyl, thienyl, pyrrolyl, imidazolyl, pyrazolyl,     oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridyl, pyrimidinyl,     triazolyl, tetrazolyl, oxadiazolyl, thiadiazolyl, pyridazinyl,     pyrazinyl, benzoxazolyl, benzothiazolyl, benzimidazolyl,     benzotriazolyl, indolyl, benzo-1,3-dioxolyl, benzodioxanyl,     benzothiadiazolyl, indazolyl, benzofuranyl, quinolyl, isoquinolyl,     pyrrolo[2,3-b]pyridinyl, oxazolo[5,4-b]pyridyl,     imidazo[1,2-a]pyrimidinyl or oxazolo[5,4-c]pyridyl, each of which is     unsubstituted or mono- or disubstituted by Hal and/or     [C(R³)₂]_(n)OA′; -   in Ik R denotes Ar or Het, —C≡C—Ar or —C≡C-Het,     -   W denotes furanyl, thiophenyl, pyrrolyl, pyrazolyl, oxazolyl,         thiazolyl, triazolyl, oxadiazolyl or thiadiazolyl, each of which         is unsubstituted or mono- or disubstituted by R²,     -   R¹ denotes A,     -   R² denotes A or Cyc,     -   R⁴ denotes H or OA′,     -   X¹, X², X³, X⁴ each, independently of one another, denote CH or         N,     -   A denotes unbranched or branched alkyl with 1-10 C-atoms,         wherein 1-7 H-atoms may be replaced by R⁵,     -   Cyc denotes cycloalkyl with 3-7 C-atoms,     -   A′ denotes unbranched or branched alkyl with 1-6 C-atoms,     -   R⁵ denotes OH,     -   Ar denotes phenyl, which is unsubstituted or mono-, di-, tri-,         tetra- or pentasubstituted by Hal and/or CN,     -   Het denotes a mono- or bicyclic aromatic heterocycle having 1 to         4 N, O and/or S atoms, which is unsubstituted or mono- or         disubstituted by Hal and/or [C(R³)₂]_(n)OA′,     -   Hal denotes F, Cl, Br or I,     -   n denotes 0, 1 or 2,     -   q 0, 1, 2 or 3,     -   with the proviso that only one or two of X¹, X², X³, X⁴ denote         N; -   in Il R denotes Ar or Het, —C≡C—Ar or —C≡C-Het,     -   W denotes furanyl, thiophenyl, pyrrolyl, pyrazolyl, oxazolyl,         thiazolyl, triazolyl, oxadiazolyl or thiadiazolyl, each of which         is unsubstituted or mono- or disubstituted by R²,     -   X¹ denotes C,     -   X² denotes C,     -   X³ denotes C or N,     -   X⁴ denotes C,     -   R¹ denotes methyl,     -   R² denotes methyl, ethyl, propyl, isopropyl, butyl, cyclopropyl         or 1-hydroxyethyl,     -   R⁴ denotes H or methoxy,     -   R⁵ denotes OH,     -   Ar denotes phenyl, which is unsubstituted or mono-, di-, or         trisubstituted by Hal and/or CN,     -   Het denotes furyl, thienyl, pyrrolyl, imidazolyl, pyrazolyl,         oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridyl,         pyrimidinyl, triazolyl, pyrrolo[2,3-b]pyridinyl,         imidazo[1,2-a]pyrimidinyl, benzoxazolyl, benzothiazolyl or         benzimidazolyl, each of which is unsubstituted or mono- or         disubstituted by Hal,     -   Hal denotes F, Cl, Br or I,     -   q 0, 1, 2 or 3,         and pharmaceutically acceptable salts, tautomers and         stereoisomers thereof, including mixtures thereof in all ratios.

The compounds of the formula I and also the starting materials for their preparation are, in addition, prepared by methods known per se, as described in the literature (for example in the standard works, such as Houben-Weyl, Methoden der organischen Chemie [Methods of Organic Chemistry], Georg-Thieme-Verlag, Stuttgart), to be precise under reaction conditions which are known and suitable for the said reactions. Use can also be made here of variants known per se which are not mentioned here in greater detail.

The starting compounds for the preparation of compounds of formula I are generally known. If they are novel, however, they can be prepared by methods known per se.

Compounds of the formula I can preferably be obtained by reacting a compound of the formula II, with a compound of the formula III.

In the compounds of the formula III, L preferably denotes Cl, Br, I or a free or reactively modified OH group, such as, for example, an activated ester, an imidazolide or alkylsulfonyloxy having 1-6 C atoms (preferably methylsulfonyloxy or trifluoromethylsulfonyloxy) or arylsulfonyloxy having 6-10 C atoms (preferably phenyl- or p-tolylsulfonyloxy).

The reaction is generally carried out in the presence of an acid-binding agent, preferably an organic base, such as DIPEA, triethylamine, dimethylaniline, pyridine or quinoline.

The addition of an alkali or alkaline earth metal hydroxide, carbonate or bicarbonate or another salt of a weak acid of the alkali or alkaline earth metals, preferably of potassium, sodium, calcium or caesium, may also be favourable.

Depending on the conditions used, the reaction time is between a few minutes and 14 days, the reaction temperature is between about −30° and 140°, normally between −10° and 90°, in particular between about 0° and about 70.

Examples of suitable inert solvents are hydrocarbons, such as hexane, petroleum ether, benzene, toluene or xylene; chlorinated hydrocarbons, such as trichloroethylene, 1,2-dichloroethane, carbon tetrachloride, chloroform or dichloromethane; alcohols, such as methanol, ethanol, isopropanol, n-propanol, n-butanol or tert-butanol; ethers, such as diethyl ether, diisopropyl ether, tetrahydrofuran (THF) or dioxane; glycol ethers, such as ethylene glycol monomethyl or monoethyl ether, ethylene glycol dimethyl ether (diglyme); ketones, such as acetone or butanone; amides, such as acetamide, dimethylacetamide or dimethylformamide (DMF); nitriles, such as acetonitrile; sulfoxides, such as dimethyl sulfoxide (DMSO); carbon disulfide; carboxylic acids, such as formic acid or acetic acid; nitro compounds, such as nitromethane or nitrobenzene; esters, such as ethyl acetate, or mixtures of the said solvents.

Particular preference is given to acetonitrile, dichloromethane and/or DMF.

Pharmaceutical Salts and Other Forms

The said compounds according to the invention can be used in their final non-salt form. On the other hand, the present invention also encompasses the use of these compounds in the form of their pharmaceutically acceptable salts, which can be derived from various organic and inorganic acids and bases by procedures known in the art. Pharmaceutically acceptable salt forms of the compounds of the formula I are for the most part prepared by conventional methods. If the compound of the formula I contains a carboxyl group, one of its suitable salts can be formed by reacting the compound with a suitable base to give the corresponding base-addition salt. Such bases are, for example, alkali metal hydroxides, including potassium hydroxide, sodium hydroxide and lithium hydroxide; alkaline earth metal hydroxides, such as barium hydroxide and calcium hydroxide; alkali metal alkoxides, for example potassium ethoxide and sodium propoxide; and various organic bases, such as piperidine, diethanolamine and N-methylglutamine. The aluminium salts of the compounds of the formula I are likewise included. In the case of certain compounds of the formula I, acid-addition salts can be formed by treating these compounds with pharmaceutically acceptable organic and inorganic acids, for example hydrogen halides, such as hydrogen chloride, hydrogen bromide or hydrogen iodide, other mineral acids and corresponding salts thereof, such as sulfate, nitrate or phosphate and the like, and alkyl- and monoarylsulfonates, such as ethanesulfonate, toluenesulfonate and benzenesulfonate, and other organic acids and corresponding salts thereof, such as acetate, trifluoroacetate, tartrate, maleate, succinate, citrate, benzoate, salicylate, ascorbate and the like. Accordingly, pharmaceutically acceptable acid-addition salts of the compounds of the formula I include the following: acetate, adipate, alginate, arginate, aspartate, benzoate, benzenesulfonate (besylate), bisulfate, bisulfite, bromide, butyrate, camphorate, camphorsulfonate, caprylate, chloride, chlorobenzoate, citrate, cyclopentanepropionate, digluconate, dihydrogenphosphate, dinitrobenzoate, dodecylsulfate, ethanesulfonate, fumarate, formate, galacterate (from mucic acid), galacturonate, glucoheptanoate, gluconate, glutamate, glycerophosphate, hemisuccinate, hemisulfate, heptanoate, hexanoate, hippurate, hydrochloride, hydrobromide, hydroiodide, 2-hydroxyethanesulfonate, iodide, isethionate, isobutyrate, lactate, lactobionate, malate, maleate, malonate, mandelate, metaphosphate, methanesulfonate, methylbenzoate, monohydrogenphosphate, 2-naphthalenesulfonate, nicotinate, nitrate, oxalate, oleate, palmoate, pectinate, persulfate, phenylacetate, 3-phenylpropionate, phosphate, phosphonate, phthalate, but this does not represent a restriction.

Furthermore, the base salts of the compounds according to the invention include aluminium, ammonium, calcium, copper, iron(III), iron(II), lithium, magnesium, manganese(III), manganese(II), potassium, sodium and zinc salts, but this is not intended to represent a restriction. Of the above-mentioned salts, preference is given to ammonium; the alkali metal salts sodium and potassium, and the alkaline earth metal salts calcium and magnesium.

Salts of the compounds of the formula I which are derived from pharmaceutically acceptable organic non-toxic bases include salts of primary, secondary and tertiary amines, substituted amines, also including naturally occurring substituted amines, cyclic amines, and basic ion exchanger resins, for example arginine, betaine, caffeine, chloroprocaine, choline, N,N′-dibenzylethylenediamine (benzathine), dicyclohexylamine, diethanolamine, diethylamine, 2-diethylaminoethanol, 2-dimethylaminoethanol, ethanolamine, ethylenediamine, N-ethylmorpholine, N-ethylpiperidine, glucamine, glucosamine, histidine, hydrabamine, isopropylamine, lidocaine, lysine, meglumine, N-methyl-D-glucamine, morpholine, piperazine, piperidine, polyamine resins, procaine, purines, theobromine, triethanolamine, triethylamine, trimethylamine, tripropylamine and tris(hydroxymethyl)methylamine (tromethamine), but this is not intended to represent a restriction.

Compounds of the present invention which contain basic nitrogen-containing groups can be quaternised using agents such as (C₁-C₄)alkyl halides, for example methyl, ethyl, isopropyl and tert-butyl chloride, bromide and iodide; di(C₁-C₄)alkyl sulfates, for example dimethyl, diethyl and diamyl sulfate; (C₁₀-C₁₈)alkyl halides, for example decyl, dodecyl, lauryl, myristyl and stearyl chloride, bromide and iodide; and aryl(C₁-C₄)alkyl halides, for example benzyl chloride and phenethyl bromide. Both water- and oil-soluble compounds according to the invention can be prepared using such salts.

The above-mentioned pharmaceutical salts which are preferred include acetate, trifluoroacetate, besylate, citrate, fumarate, gluconate, hemisuccinate, hippurate, hydrochloride, hydrobromide, isethionate, mandelate, meglumine, nitrate, oleate, phosphonate, pivalate, sodium phosphate, stearate, sulfate, sulfosalicylate, tartrate, thiomalate, tosylate and tromethamine, but this is not intended to represent a restriction.

Particular preference is given to hydrochloride, dihydrochloride, hydrobromide, maleate, mesylate, phosphate, sulfate and succinate.

The acid-addition salts of basic compounds of the formula I are prepared by bringing the free base form into contact with a sufficient amount of the desired acid, causing the formation of the salt in a conventional manner. The free base can be regenerated by bringing the salt form into contact with a base and isolating the free base in a conventional manner. The free base forms differ in a certain respect from the corresponding salt forms thereof with respect to certain physical properties, such as solubility in polar solvents; for the purposes of the invention, however, the salts otherwise correspond to the respective free base forms thereof.

As mentioned, the pharmaceutically acceptable base-addition salts of the compounds of the formula I are formed with metals or amines, such as alkali metals and alkaline earth metals or organic amines. Preferred metals are sodium, potassium, magnesium and calcium. Preferred organic amines are N,N′-dibenzylethylenediamine, chloroprocaine, choline, diethanolamine, ethylenediamine, N-methyl-D-glucamine and procaine.

The base-addition salts of acidic compounds according to the invention are prepared by bringing the free acid form into contact with a sufficient amount of the desired base, causing the formation of the salt in a conventional manner.

The free acid can be regenerated by bringing the salt form into contact with an acid and isolating the free acid in a conventional manner. The free acid forms differ in a certain respect from the corresponding salt forms thereof with respect to certain physical properties, such as solubility in polar solvents; for the purposes of the invention, however, the salts otherwise correspond to the respective free acid forms thereof.

If a compound according to the invention contains more than one group which is capable of forming pharmaceutically acceptable salts of this type, the invention also encompasses multiple salts. Typical multiple salt forms include, for example, bitartrate, diacetate, difumarate, dimeglumine, diphosphate, disodium and trihydrochloride, but this is not intended to represent a restriction.

With regard to that stated above, it can be seen that the expression “pharmaceutically acceptable salt” in the present connection is taken to mean an active ingredient which comprises a compound of the formula I in the form of one of its salts, in particular if this salt form imparts improved pharmacokinetic properties on the active ingredient compared with the free form of the active ingredient or any other salt form of the active ingredient used earlier. The pharmaceutically acceptable salt form of the active ingredient can also provide this active ingredient for the first time with a desired pharmacokinetic property which it did not have earlier and can even have a positive influence on the pharmacodynamics of this active ingredient with respect to its therapeutic efficacy in the body.

Isotopes

There is furthermore intended that a compound of the formula I includes isotope-labelled forms thereof. An isotope-labelled form of a compound of the formula I is identical to this compound apart from the fact that one or more atoms of the compound have been replaced by an atom or atoms having an atomic mass or mass number which differs from the atomic mass or mass number of the atom which usually occurs naturally. Exam-pies of isotopes which are readily commercially available and which can be incorporated into a compound of the formula I by well-known methods include isotopes of hydrogen, carbon, nitrogen, oxygen, phosphorus, fluorine and chlorine, for example ²H, ³H, ¹³O, ¹⁴C, ¹⁵N, ¹⁸O, ¹⁷O, ³¹P, ³²P, ³⁵S, ¹⁸F and ³⁶Cl, respectively. A compound of the formula I, a prodrug, thereof or a pharmaceutically acceptable salt of either which contains one or more of the above-mentioned isotopes and/or other isotopes of other atoms is intended to be part of the present invention. An isotope-labelled compound of the formula I can be used in a number of beneficial ways. For example, an isotope-labelled compound of the formula I into which, for example, a radioisotope, such as ³H or ¹⁴C, has been incorporated is suitable for medicament and/or substrate tissue distribution assays. These radioisotopes, i.e. tritium (³H) and carbon-14 (¹⁴C), are particularly preferred owing to simple preparation and excellent detectability. Incorporation of heavier isotopes, for example deuterium (²H), into a compound of the formula I has therapeutic advantages owing to the higher metabolic stability of this isotope-labelled compound. Higher metabolic stability translates directly into an increased in vivo half-life or lower dosages, which under most circumstances would represent a preferred embodiment of the present invention. An isotope-labelled compound of the formula I can usually be prepared by carrying out the procedures disclosed in the synthesis schemes and the related description, in the example part and in the preparation part in the present text, replacing a non-isotope-labelled reactant by a readily available isotope-labelled reactant.

Deuterium (²H) can also be incorporated into a compound of the formula I for the purpose in order to manipulate the oxidative metabolism of the compound by way of the primary kinetic isotope effect. The primary kinetic isotope effect is a change of the rate for a chemical reaction that results from exchange of isotopic nuclei, which in turn is caused by the change in ground state energies necessary for covalent bond formation after this isotopic exchange. Exchange of a heavier isotope usually results in a lowering of the ground state energy for a chemical bond and thus cause a reduction in the rate in rate-limiting bond breakage. If the bond breakage occurs in or in the vicinity of a saddle-point region along the coordinate of a multi-product reaction, the product distribution ratios can be altered substantially. For explanation: if deuterium is bonded to a carbon atom at a non-exchangeable position, rate differences of k_(M)/k_(D)=2-7 are typical. If this rate difference is successfully applied to a compound of the formula I that is susceptible to oxidation, the profile of this compound in vivo can be drastically modified and result in improved pharmacokinetic properties.

When discovering and developing therapeutic agents, the person skilled in the art attempts to optimise pharmacokinetic parameters while retaining desirable in vitro properties. It is reasonable to assume that many compounds with poor pharmacokinetic profiles are susceptible to oxidative metabolism. In vitro liver microsomal assays currently available provide valuable information on the course of oxidative metabolism of this type, which in turn permits the rational design of deuterated compounds of the formula I with improved stability through resistance to such oxidative metabolism. Significant improvements in the pharmacokinetic profiles of compounds of the formula I are thereby obtained, and can be expressed quantitatively in terms of increases in the in vivo half-life (t/2), concentration at maximum therapeutic effect (C_(max)), area under the dose response curve (AUC), and F; and in terms of reduced clearance, dose and materials costs.

The following is intended to illustrate the above: a compound of the formula I which has multiple potential sites of attack for oxidative metabolism, for example benzylic hydrogen atoms and hydrogen atoms bonded to a nitrogen atom, is prepared as a series of analogues in which various combinations of hydrogen atoms are replaced by deuterium atoms, so that some, most or all of these hydrogen atoms have been replaced by deuterium atoms. Half-life determinations enable favourable and accurate determination of the extent of the extent to which the improvement in resistance to oxidative metabolism has improved. In this way, it is determined that the half-life of the parent compound can be extended by up to 100% as the result of deuterium-hydrogen exchange of this type.

Deuterium-hydrogen exchange in a compound of the formula I can also be used to achieve a favourable modification of the metabolite spectrum of the starting compound in order to diminish or eliminate undesired toxic metabolites. For example, if a toxic metabolite arises through oxidative carbon-hydrogen (C—H) bond cleavage, it can reasonably be assumed that the deuterated analogue will greatly diminish or eliminate production of the unwanted metabolite, even if the particular oxidation is not a rate-determining step. Further information on the state of the art with respect to deuterium-hydrogen exchange may be found, for example in Hanzlik et al., J. Org. Chem. 55, 3992-3997, 1990, Reider et al., J. Org. Chem. 52, 3326-3334, 1987, Foster, Adv. Drug Res. 14, 1-40, 1985, Gillette et al, Biochemistry 33(10) 2927-2937, 1994, and Jarman et al. Carcinogenesis 16(4), 683-688, 1993.

The invention furthermore relates to medicaments comprising at least one compound of the formula I and/or pharmaceutically acceptable salts, tautomers and stereoisomers thereof, including mixtures thereof in all ratios, and optionally excipients and/or adjuvants.

Pharmaceutical formulations can be administered in the form of dosage units which comprise a predetermined amount of active ingredient per dosage unit. Such a unit can comprise, for example, 0.5 mg to 1 g, preferably 1 mg to 700 mg, particularly preferably 5 mg to 100 mg, of a compound according to the invention, depending on the condition treated, the method of administration and the age, weight and condition of the patient, or pharmaceutical formulations can be administered in the form of dosage units which comprise a predetermined amount of active ingredient per dosage unit. Preferred dosage unit formulations are those which comprise a daily dose or part-dose, as indicated above, or a corresponding fraction thereof of an active ingredient. Furthermore, pharmaceutical formulations of this type can be prepared using a process which is generally known in the pharmaceutical art.

Pharmaceutical formulations can be adapted for administration via any desired suitable method, for example by oral (including buccal or sublingual), rectal, nasal, topical (including buccal, sublingual or transdermal), vaginal or parenteral (including subcutaneous, intramuscular, intravenous or intradermal) methods. Such formulations can be prepared using all processes known in the pharmaceutical art by, for example, combining the active ingredient with the excipient(s) or adjuvant(s).

Pharmaceutical formulations adapted for oral administration can be administered as separate units, such as, for example, capsules or tablets; powders or granules; solutions or suspensions in aqueous or non-aqueous liquids; edible foams or foam foods; or oil-in-water liquid emulsions or water-in-oil liquid emulsions.

Thus, for example, in the case of oral administration in the form of a tablet or capsule, the active-ingredient component can be combined with an oral, non-toxic and pharmaceutically acceptable inert excipient, such as, for example, ethanol, glycerol, water and the like. Powders are prepared by comminuting the compound to a suitable fine size and mixing it with a pharmaceutical excipient comminuted in a similar manner, such as, for example, an edible carbohydrate, such as, for example, starch or mannitol. A flavour, preservative, dispersant and dye may likewise be present.

Capsules are produced by preparing a powder mixture as described above and filling shaped gelatine shells therewith. Glidants and lubricants, such as, for example, highly disperse silicic acid, talc, magnesium stearate, calcium stearate or polyethylene glycol in solid form, can be added to the powder mixture before the filling operation. A disintegrant or solubiliser, such as, for example, agar-agar, calcium carbonate or sodium carbonate, may likewise be added in order to improve the availability of the medicament after the capsule has been taken.

In addition, if desired or necessary, suitable binders, lubricants and disintegrants as well as dyes can likewise be incorporated into the mixture. Suitable binders include starch, gelatine, natural sugars, such as, for example, glucose or beta-lactose, sweeteners made from maize, natural and synthetic rubber, such as, for example, acacia, tragacanth or sodium alginate, carboxymethylcellulose, polyethylene glycol, waxes, and the like. The lubricants used in these dosage forms include sodium oleate, sodium stearate, magnesium stearate, sodium benzoate, sodium acetate, sodium chloride and the like. The disintegrants include, without being restricted thereto, starch, methylcellulose, agar, bentonite, xanthan gum and the like. The tablets are formulated by, for example, preparing a powder mixture, granulating or dry-pressing the mixture, adding a lubricant and a disintegrant and pressing the entire mixture to give tablets. A powder mixture is prepared by mixing the compound comminuted in a suitable manner with a diluent or a base, as described above, and optionally with a binder, such as, for example, carboxymethylcellulose, an alginate, gelatine or polyvinylpyrrolidone, a dissolution retardant, such as, for example, paraffin, an absorption accelerator, such as, for example, a quaternary salt, and/or an absorbent, such as, for example, bentonite, kaolin or dicalcium phosphate. The powder mixture can be granulated by wetting it with a binder, such as, for example, syrup, starch paste, acadia mucilage or solutions of cellulose or polymer materials and pressing it through a sieve. As an alternative to granulation, the powder mixture can be run through a tabletting machine, giving lumps of non-uniform shape, which are broken up to form granules. The granules can be lubricated by addition of stearic acid, a stearate salt, talc or mineral oil in order to prevent sticking to the tablet casting moulds. The lubricated mixture is then pressed to give tablets. The compounds according to the invention can also be combined with a free-flowing inert excipient and then pressed directly to give tablets without carrying out the granulation or dry-pressing steps. A transparent or opaque protective layer consisting of a shellac sealing layer, a layer of sugar or polymer material and a gloss layer of wax may be present. Dyes can be added to these coatings in order to be able to differentiate between different dosage units.

Oral liquids, such as, for example, solution, syrups and elixirs, can be prepared in the form of dosage units so that a given quantity comprises a prespecified amount of the compound. Syrups can be prepared by dissolving the compound in an aqueous solution with a suitable flavour, while elixirs are prepared using a non-toxic alcoholic vehicle. Suspensions can be formulated by dispersion of the compound in a non-toxic vehicle. Solubilisers and emulsifiers, such as, for example, ethoxylated isostearyl alcohols and polyoxyethylene sorbitol ethers, preservatives, flavour additives, such as, for example, peppermint oil or natural sweeteners or saccharin, or other artificial sweeteners and the like, can likewise be added.

The dosage unit formulations for oral administration can, if desired, be encapsulated in microcapsules. The formulation can also be prepared in such a way that the release is extended or retarded, such as, for example, by coating or embedding of particulate material in polymers, wax and the like.

The compounds of the formula I and pharmaceutically acceptable salts, tautomers and stereoisomers thereof can also be administered in the form of liposome delivery systems, such as, for example, small unilamellar vesicles, large unilamellar vesicles and multilamellar vesicles. Liposomes can be formed from various phospholipids, such as, for example, cholesterol, stearylamine or phosphatidylcholines.

The compounds of the formula I and the pharmaceutically acceptable salts, tautomers and physiologically functional derivatives thereof can also be delivered using monoclonal antibodies as individual carriers to which the compound molecules are coupled. The compounds can also be coupled to soluble polymers as targeted medicament carriers. Such polymers may encompass polyvinylpyrrolidone, pyran copolymer, polyhydroxypropylmethacrylamidophenol, polyhydroxyethylaspartamidophenol or polyethylene oxide polylysine, substituted by palmitoyl radicals. The compounds may furthermore be coupled to a class of biodegradable polymers which are suitable for achieving controlled release of a medicament, for example polylactic acid, poly-epsilon-caprolactone, polyhydroxybutyric acid, polyorthoesters, polyacetals, polydihydroxypyrans, polycyanoacrylates and crosslinked or amphipathic block copolymers of hydrogels.

Pharmaceutical formulations adapted for transdermal administration can be administered as independent plasters for extended, close contact with the epidermis of the recipient. Thus, for example, the active ingredient can be delivered from the plaster by iontophoresis, as described in general terms in Pharmaceutical Research, 3(6), 318 (1986).

Pharmaceutical compounds adapted for topical administration can be formulated as ointments, creams, suspensions, lotions, powders, solutions, pastes, gels, sprays, aerosols or oils.

For the treatment of the eye or other external tissue, for example mouth and skin, the formulations are preferably applied as topical ointment or cream. In the case of formulation to give an ointment, the active ingredient can be employed either with a paraffinic or a water-miscible cream base. Alternatively, the active ingredient can be formulated to give a cream with an oil-in-water cream base or a water-in-oil base.

Pharmaceutical formulations adapted for topical application to the eye include eye drops, in which the active ingredient is dissolved or suspended in a suitable carrier, in particular an aqueous solvent.

Pharmaceutical formulations adapted for topical application in the mouth encompass lozenges, pastilles and mouthwashes.

Pharmaceutical formulations adapted for rectal administration can be administered in the form of suppositories or enemas.

Pharmaceutical formulations adapted for nasal administration in which the carrier substance is a solid comprise a coarse powder having a particle size, for example, in the range 20-500 microns, which is administered in the manner in which snuff is taken, i.e. by rapid inhalation via the nasal passages from a container containing the powder held close to the nose. Suitable formulations for administration as nasal spray or nose drops with a liquid as carrier substance encompass active-ingredient solutions in water or oil.

Pharmaceutical formulations adapted for administration by inhalation encompass finely particulate dusts or mists, which can be generated by various types of pressurised dispensers with aerosols, nebulisers or insufflators.

Pharmaceutical formulations adapted for vaginal administration can be administered as pessaries, tampons, creams, gels, pastes, foams or spray formulations.

Pharmaceutical formulations adapted for parenteral administration include aqueous and non-aqueous sterile injection solutions comprising antioxidants, buffers, bacteriostatics and solutes, by means of which the formulation is rendered isotonic with the blood of the recipient to be treated; and aqueous and non-aqueous sterile suspensions, which may comprise suspension media and thickeners. The formulations can be administered in single-dose or multidose containers, for example sealed ampoules and vials, and stored in freeze-dried (lyophilised) state, so that only the addition of the sterile carrier liquid, for example water for injection purposes, immediately before use is necessary. Injection solutions and suspensions prepared in accordance with the recipe can be prepared from sterile powders, granules and tablets.

It goes without saying that, in addition to the above particularly mentioned constituents, the formulations may also comprise other agents usual in the art with respect to the particular type of formulation; thus, for example, formulations which are suitable for oral administration may comprise flavours.

A therapeutically effective amount of a compound of the formula I depends on a number of factors, including, for example, the age and weight of the animal, the precise condition that requires treatment, and its severity, the nature of the formulation and the method of administration, and is ultimately determined by the treating doctor or vet. However, an effective amount of a compound according to the invention is generally in the range from 0.1 to 100 mg/kg of body weight of the recipient (mammal) per day and particularly typically in the range from 1 to 10 mg/kg of body weight per day. Thus, the actual amount per day for an adult mammal weighing 70 kg is usually between 70 and 700 mg, where this amount can be administered as a single dose per day or usually in a series of part-doses (such as, for example, two, three, four, five or six) per day, so that the total daily dose is the same. An effective amount of a salt or solvate or of a physiologically functional derivative thereof can be determined as the fraction of the effective amount of the compound according to the invention per se. It can be assumed that similar doses are suitable for the treatment of other conditions mentioned above.

A combined treatment of this type can be achieved with the aid of simultaneous, consecutive or separate dispensing of the individual components of the treatment. Combination products of this type employ the compounds according to the invention.

The invention furthermore relates to medicaments comprising at least one compound of the formula I and/or pharmaceutically acceptable salts, tauotmers and stereoisomers thereof, including mixtures thereof in all ratios, and at least one further medicament active ingredient.

The invention also relates to a set (kit) consisting of separate packs of

-   -   (a) an effective amount of a compound of the formula I and/or         pharmaceutically acceptable salts, tautomers and stereoisomers         thereof, including mixtures thereof in all ratios, and     -   (b) an effective amount of a further medicament active         ingredient.

The set comprises suitable containers, such as boxes, individual bottles, bags or ampoules. The set may, for example, comprise separate ampoules, each containing an effective amount of a compound of the formula I and/or pharmaceutically acceptable salts, solvates and stereoisomers thereof, including mixtures thereof in all ratios,

and an effective amount of a further medicament active ingredient in dissolved or lyophilised form.

“Treating” as used herein, means an alleviation, in whole or in part, of symptoms associated with a disorder or disease, or slowing, or halting of further progression or worsening of those symptoms, or prevention or prophylaxis of the disease or disorder in a subject at risk for developing the disease or disorder.

The term “effective amount” in connection with a compound of formula (I) can mean an amount capable of alleviating, in whole or in part, symptoms associated with a disorder or disease, or slowing or halting further progression or worsening of those symptoms, or preventing or providing prophylaxis for the disease or disorder in a subject having or at risk for developing a disease disclosed herein, such as inflammatory conditions, immunological conditions, cancer or metabolic conditions.

In one embodiment an effective amount of a compound of formula (I) is an amount that inhibits a tankyrase in a cell, such as, for example, in vitro or in vivo. In some embodiments, the effective amount of the compound of formula (I) inhibits tankyrase in a cell by 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% or 99%, compared to the activity of tankyrase in an untreated cell. The effective amount of the compound of formula (I), for example in a pharmaceutical composition, may be at a level that will exercise the desired effect; for example, about 0.005 mg/kg of a subject's body weight to about 10 mg/kg of a subject's body weight in unit dosage for both oral and parenteral administration.

Use

The present compounds of formula I are useful for treating or preventing cardiovascular disorders and/or conditions. Treatment with the present compounds is expected to lower the cardiovascular morbidity and mortality associated with atherosclerosis due to their antidyslipidaemic as well as anti-inflammatory properties. The cardiovascular disease conditions include macro-angiopathies of various internal organs causing myocardial infarction, congestive heart failure, cerebrovascular disease and peripheral arterial insufficiency of the lower extremities. Because of their insulin sensitizing effect the compounds of formula I are also expected to prevent or delay the development of type 2 diabetes from the metabolic syndrome and diabetes of pregnancy. Therefore the development of long-term complications associated with chronic hyperglycaemia in diabetes mellitus, such as the micro-angiopathies causing renal disease, retinal damage and peripheral vascular disease of the lower limbs, is expected to be delayed.

In addition the present compounds of formula I are useful for treating or preventing inflammatory and/or neurodegenerative disorders and/or conditions. Examples of such disorders or conditions are polycystic ovarian syndrome and states of inflammatory disease including neurodegenerative disorders such as mild cognitive impairment, Alzheimer's disease, Parkinson's disease and multiple sclerosis.

The compounds of the present invention may also be useful for decreasing sebum production in sebaceous glands of the skin following systemic or topical application. Diseases of the sebaceous gland are acne, seborrhea, sebaceoma and sebaceous carcinoma. The pathogenesis of acne involves lipid (over)production by the sebaceous gland and therefore compound of the present invention may be particularly useful in the treatment of acne. Moreover, compounds of formula I may be useful as antimycobacterial agents in the treatment of mycobacterial infections, such as e.g. tuberculosis. Compounds of the invention may be useful to treat conditions associated with viral infection like e.g. Hepatitis C, AIDS, Polio, Influenza, warts.

Examples of inflammatory diseases include rheumatoid arthritis, psoriasis, contact dermatitis, delayed hypersensitivity reaction and the like.

Also encompassed is the use of the compounds of the formula I and/or pharmaceutically acceptable salts, tautomers and stereoisomers thereof for the preparation of a medicament for the treatment or prevention of a FASN-induced disease or a FASN-induced condition in a mammal, in which to this method a therapeutically effective amount of a compound according to the invention is administered to a sick mammal in need of such treatment. The therapeutic amount varies according to the specific disease and can be determined by the person skilled in the art without undue effort.

The expression “FASN-induced diseases or conditions” refers to pathological conditions that depend on the activity of FASN. Diseases associated with FASN activity include cancer, multiple sclerosis, cardiovascular diseases, central nervous system injury and different forms of inflammation.

The present invention specifically relates to compounds of the formula I and pharmaceutically acceptable salts, tautomers and stereoisomers thereof, including mixtures thereof in all ratios,

for the use for the treatment of diseases in which the inhibition, regulation and/or modulation inhibition of FASN plays a role.

The present invention specifically relates to compounds of the formula I and pharmaceutically acceptable salts, tautomers and stereoisomers thereof, including mixtures thereof in all ratios, for the use for the inhibition of FASN.

The present invention specifically relates to compounds of the formula I and pharmaceutically acceptable salts, tautomers and stereoisomers thereof, including mixtures thereof in all ratios, for the use for the treatment of cancer, multiple sclerosis, cardiovascular diseases, central nervous system injury and different forms of inflammation.

The present invention specifically relates to methods for treating or preventing cancer, multiple sclerosis, cardiovascular diseases, central nervous system injury and different forms of inflammation, comprising administering to a subject in need thereof an effective amount of a compound of formula I or a pharmaceutically acceptable salt, tautomer, stereoisomer or solvate thereof.

Representative cancers that compounds of formula I are useful for treating or preventing include, but are not limited to, cancer of the head, neck, eye, mouth, throat, esophagus, bronchus, larynx, pharynx, chest, bone, lung, colon, rectum, stomach, prostate, urinary bladder, uterine, cervix, breast, ovaries, testicles or other reproductive organs, skin, thyroid, blood, lymph nodes, kidney, liver, pancreas, brain, central nervous system, solid tumors and blood-borne tumors.

Moreover, representative cancers that compounds of formula I are useful for treating or preventing include cancer of brain (gliomas), glioblastomas, leukemias, Bannayan-Zonana syndrome, Cowden disease, Lhermitte-Duclos disease, breast, inflammatory breast cancer, Wilm's tumor, Ewing's sarcoma, Rhabdomyosarcoma, ependymoma, medulloblastoma, colon, head and neck, kidney, lung, liver, melanoma, ovarian, pancreatic, prostate, sarcoma, osteosarcoma, giant cell tumor of bone and thyroid.

Representative cardiovascular diseases that compounds of formula I are useful for treating or preventing include, but are not limited to, restenosis, atherosclerosis and its consequences such as stroke, myocardial infarction, ischemic damage to the heart, lung, gut, kidney, liver, pancreas, spleen or brain.

The present invention relates to a method of treating a proliferative, autoimmune, anti inflammatory or infectious disease disorder that comprises administering to a subject in need thereof a therapeutically effective amount of a compound of formula I.

Preferably, the present invention relates to a method wherein the disease is a cancer.

Particularly preferable, the present invention relates to a method wherein the disease is a cancer, wherein administration is simultaneous, sequential or in alternation with administration of at least one other active drug agent.

The disclosed compounds of the formula I can be administered in combination with other known therapeutic agents, including anticancer agents. As used here, the term “anticancer agent” relates to any agent which is administered to a patient with cancer for the purposes of treating the cancer.

The anti-cancer treatment defined above may be applied as a monotherapy or may involve, in addition to the herein disclosed compounds of formula I, conventional surgery or radiotherapy or medicinal therapy. Such medicinal therapy, e.g. a chemotherapy or a targeted therapy, may include one or more, but preferably one, of the following anti-tumor agents:

Alkylating Agents

such as altretamine, bendamustine, busulfan, carmustine, chlorambucil, chlormethine, cyclophosphamide, dacarbazine, ifosfamide, improsulfan, tosilate, lomustine, melphalan, mitobronitol, mitolactol, nimustine, ranimustine, temozolomide, thiotepa, treosulfan, mechloretamine, carboquone; apaziquone, fotemustine, glufosfamide, palifosfamide, pipobroman, trofosfamide, uramustine, TH-302⁴, VAL-083⁴;

Platinum Compounds

such as carboplatin, cisplatin, eptaplatin, miriplatine hydrate, oxaliplatin, lobaplatin, nedaplatin, picoplatin, satraplatin;

lobaplatin, nedaplatin, picoplatin, satraplatin;

DNA Altering Agents

such as amrubicin, bisantrene, decitabine, mitoxantrone, procarbazine, trabectedin, clofarabine;

amsacrine, brostallicin, pixantrone, laromustine^(1,3);

Topoisomerase Inhibitors

such as etoposide, irinotecan, razoxane, sobuzoxane, teniposide, topotecan; amonafide, belotecan, elliptinium acetate, voreloxin;

Microtubule Modifiers

such as cabazitaxel, docetaxel, eribulin, ixabepilone, paclitaxel, vinblastine, vincristine, vinorelbine, vindesine, vinflunine;

fosbretabulin, tesetaxel;

Antimetabolites

such as asparaginase³, azacitidine, calcium levofolinate, capecitabine, cladribine, cytarabine, enocitabine, floxuridine, fludarabine, fluorouracil, gemcitabine, mercaptopurine, methotrexate, nelarabine, pemetrexed, pralatrexate, azathioprine, thioguanine, carmofur;

doxifluridine, elacytarabine, raltitrexed, sapacitabine, tegafur^(2,3), trimetrexate;

Anticancer Antibiotics

such as bleomycin, dactinomycin, doxorubicin, epirubicin, idarubicin, levamisole, miltefosine, mitomycin C, romidepsin, streptozocin, valrubicin, zinostatin, zorubicin, daunurobicin, plicamycin;

aclarubicin, peplomycin, pirarubicin;

Hormones/Antagonists

such as abarelix, abiraterone, bicalutamide, buserelin, calusterone, chlorotrianisene, degarelix, dexamethasone, estradiol, fluocortolone fluoxymesterone, flutamide, fulvestrant, goserelin, histrelin, leuprorelin, megestrol, mitotane, nafarelin, nandrolone, nilutamide, octreotide, prednisolone, raloxifene, tamoxifen, thyrotropin alfa, toremifene, trilostane, triptorelin, diethylstilbestrol;

acolbifene, danazol, deslorelin, epitiostanol, orteronel, enzalutamide^(1,3);

Aromatase Inhibitors

such as aminoglutethimide, anastrozole, exemestane, fadrozole, letrozole, testolactone;

formestane;

Small Molecule Kinase Inhibitors

such as crizotinib, dasatinib, erlotinib, imatinib, lapatinib, nilotinib, pazopanib, regorafenib, ruxolitinib, sorafenib, sunitinib, vandetanib, vemurafenib, bosutinib, gefitinib, axitinib;

afatinib, alisertib, dabrafenib, dacomitinib, dinaciclib, dovitinib, enzastaurin, nintedanib, lenvatinib, linifanib, linsitinib, masitinib, midostaurin, motesanib, neratinib, orantinib, perifosine, ponatinib, radotinib, rigosertib, tipifarnib, tivantinib, tivozanib, trametinib, pimasertib, brivanib alaninate, cediranib, apatinib⁴, cabozantinib S-malate^(1,3), ibrutinib^(1,3), icotinib⁴, buparlisib², cipatinib⁴, cobimetinib^(1,3), idelalisib^(1,3), fedratinib¹, XL-647⁴;

Photosensitizers

such as methoxsalen³;

porfimer sodium, talaporfin, temoporfin;

Antibodies

such as alemtuzumab, besilesomab, brentuximab vedotin, cetuximab, denosumab, ipilimumab, ofatumumab, panitumumab, rituximab, tositumomab, trastuzumab, bevacizumab, pertuzumab^(2,3);

catumaxomab, elotuzumab, epratuzumab, farletuzumab, mogamulizumab, necitumumab, nimotuzumab, obinutuzumab, ocaratuzumab, oregovomab, ramucirumab, rilotumumab, siltuximab, tocilizumab, zalutumumab, zanolimumab, matuzumab, dalotuzumab^(1,2,3), onartuzumab^(1,3), racotumomab¹, tabalumab^(1,3), EMD-525797⁴, nivolumab^(1,3);

Cytokines

such as aldesleukin, interferon alfa², interferon alfa2a³, interferon alfa2b^(2,3); celmoleukin, tasonermin, teceleukin, oprelvekin^(1,3), recombinant interferon beta-1a⁴;

Drug Conjugates

such as denileukin diftitox, ibritumomab tiuxetan, iobenguane 1123, prednimustine, trastuzumab emtansine, estramustine, gemtuzumab, ozogamicin, aflibercept;

cintredekin besudotox, edotreotide, inotuzumab ozogamicin, naptumomab estafenatox, oportuzumab monatox, technetium (99mTc) arcitumomab^(1,3), vintafolide^(1,3);

Vaccines

such as sipuleucel³; vitespen³, emepepimut-S³, oncoVAX⁴, rindopepimut³, troVax⁴, MGN-1601⁴, MGN-1703⁴;

Miscellaneous

alitretinoin, bexarotene, bortezomib, everolimus, ibandronic acid, imiquimod, lenalidomide, lentinan, metirosine, mifamurtide, pamidronic acid, pegaspargase, pentostatin, sipuleucel³, sizofiran, tamibarotene, temsirolimus, thalidomide, tretinoin, vismodegib, zoledronic acid, vorinostat; celecoxib, cilengitide, entinostat, etanidazole, ganetespib, idronoxil, iniparib, ixazomib, lonidamine, nimorazole, panobinostat, peretinoin, plitidepsin, pomalidomide, procodazol, ridaforolimus, tasquinimod, telotristat, thymalfasin, tirapazamine, tosedostat, trabedersen, ubenimex, valspodar, gendicine⁴, picibanil⁴, reolysin⁴, retaspimycin hydrochloride^(1,3), trebananib^(2,3), virulizin⁴, carfilzomib^(1,3), endostatin⁴, immucothel⁴, belinostat³, MGN-1703⁴; ¹ Prop. INN (Proposed International Nonproprietary Name)² Rec. INN (Recommended International Nonproprietary Names)³ USAN (United States Adopted Name)⁴ no INN.

The following abbreviations refer respectively to the definitions below:

aq (aqueous), h (hour), g (gram), L (liter), mg (milligram), MHz (Megahertz), min. (minute), mm (millimeter), mmol (millimole), mM (millimolar), m.p. (melting point), eq (equivalent), mL (milliliter), L (microliter), ACN (acetonitrile), AcOH (acetic acid), CDCl₃ (deuterated chloroform), CD₃OD (deuterated methanol), CH₃CN (acetonitrile), c-hex (cyclohexane), DCC (dicyclohexyl carbodiimide), DCM (dichloromethane), DIC (diisopropyl carbodiimide), DIEA (diisopropylethyl-amine), DMF (dimethylformamide), DMSO (dimethylsulfoxide), DMSO-d₆ (deuterated dimethylsulfoxide), EDC (1-(3-dimethyl-amino-propyl)-3-ethylcarbodiimide), ESI (Electro-spray ionization), EtOAc (ethyl acetate), Et₂O (diethyl ether), EtOH (ethanol), HATU (dimethylamino-([1,2,3]triazolo[4,5-b]pyridin-3-yloxy)-methylene]-dimethyl-ammonium hexafluorophosphate), HPLC (High Performance Liquid Chromatography), i-PrOH (2-propanol), K₂CO₃ (potassium carbonate), LC (Liquid Chromatography), MeOH (methanol), MgSO₄ (magnesium sulfate), MS (mass spectrometry), MTBE (Methyl tert-butyl ether), NaHCO₃ (sodium bicarbonate), NaBH₄ (sodium borohydride), NMM (N-methyl morpholine), NMR (Nuclear Magnetic Resonance), PyBOP (benzotriazole-1-yl-oxy-tris-pyrrolidino-phosphonium hexafluorophosphate), RT or r.t. (room temperature), Rt (retention time), SPE (solid phase extraction), TBTU (2-(1-H-benzotriazole-1-yl)-1,1,3,3-tetramethyluromium tetrafluoro borate), TEA (triethylamine), TFA (trifluoroacetic acid), THF (tetrahydrofuran), TLC (Thin Layer Chromatography), UV (Ultraviolet).

Description of the In Vitro Assays

Abbreviations:

GST=Glutathione-S-transferase

FRET=Fluorescence resonance energy transfer

HTRF®=(homogenous time resolved fluorescence)

HEPES=4-(2-hydroxyethyl)-1-piperazine ethanesulfonic acid buffer

DTT=Dithiothreitol

BSA=bovine serum albumin

CHAPS=detergent;

CHAPS=3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate

Biochemical Activity Testing of Human Fatty Acid Synthase FASN

Fatty acid synthase FASN is a multifunctional enzyme with seven catalytic activities thereby synthesising long chain fatty acids especially palmitoyl-CoA in the presence of co-factor NADPH starting from the substrates acetyl-CoA and malonyl-CoA. The reductive synthesis is realized by the oxidation of NADPH to NADP. Since NADPH has a high fluorescence intensity quantum yield compared to NADP with excitation at 340 nm and emission at 460 nm, the reaction can be monitored via the decrease in fluorescence intensity. The biochemical FASN activity testing was performed as 384 well two-time-point kinetic fluorescence intensity assay format in Greiner low volume medium binding 384-well black microtiter plates in a total assay volume of 8 μl and was used for high throughput screen. In each well 3 μl 40 nM human recombinant full-length fatty acid synthase (produced in-house in SF9 cells) were dispensed in the following assay buffer: 50 mM potassium phosphate buffer pH 7.0, 0.005% (w/v) BSA, 2 mM Glutathione, 0.02% Tween-20. Then 2 μl of 200 μM NADPH in assay buffer were added, followed by the addition of the test compounds in 10 dilution concentrations starting with 30 μM (final concentration) to get a final DMSO content of 1% (v/v). The mixture was incubated for at least 15 min at room temperature. After the pre-incubation the enzymatic reaction was started by the addition of 2 μl substrate solution (80 μM acetyl-CoA, 240 μM malonyl-CoA). A first fluorescence intensity measurement (time point one) was performed with an Envision multimode reader (Perkin Elmer LAS Germany GmbH) at excitation wavelength 340 nm (lamp mode) and emission wavelength 460 nm. The reaction was incubated for 30 minutes at room temperature. After this the fluorescence intensity was measured again in the Envision using the same parameters as described above (second time point measurement). The data were analysed by subtracting the first time point measurement value from the second time point measurement value (after the enzymatic reaction). The differences of the emission signals were determined. These reflect directly the conversion rate of NADPH. The full value used was the inhibitor-free reaction. A pharmacological zero value was used like GSK837149A (Sigma-Aldrich) in a final concentration of 5-10 μM. The inhibitory values (IC50) were determined using either the program Symyx Assay Explorer® or Condosseo® from GeneData.

Above and below, all temperatures are indicated in ° C. In the following examples, “conventional work-up” means: water is added if necessary, the pH is adjusted, if necessary, to values between 2 and 10, depending on the constitution of the end product, the mixture is extracted with ethyl acetate or dichloromethane, the phases are separated, the organic phase is dried over sodium sulfate and evaporated, and the residue is purified by chromatography on silica gel and/or by crystallisation. Rf values on silica gel; eluent: ethyl acetate/methanol 9:1.

LCMS:

Method A

Method: A—0.1% HCOOH in H₂O, B—0.1% HCOOH in ACN: Flow—2.4 mL/min.

Column: Chromolith SpeedRod RP-18e (50×4.6 mm)

Method B

Method: A—0.1% TFA in H₂O, B—0.1% TFA in ACN: Flow—2.4 mL/min.

Column: Chromolith SpeedRod RP-18e (50×4.6 mm) (50×4.6 mm)

¹H NMR was recorded on Bruker DPX-300, DRX-400 or AVII-400 spectrometer, using residual signal of deuterated solvent as internal reference. Chemical shifts (6) are reported in ppm relative to the residual solvent signal (δ=2.49 ppm for ¹H NMR in DMSO-d₆). ¹H NMR data are reported as follows: chemical shift (multiplicity, coupling constants, and number of hydrogens). Multiplicity is abbreviated as follows: s (singlet), d (doublet), t (triplet), q (quartet), m (multiplet), br (broad).

GENERAL SYNTHESIS 1 OXADIAZOL SYNTHESIS

R₆=methyl, tert-butyl, benzyl or allyl;

Y═Cl, Br, I or —OSO₂—R₇;

R₇=methyl, trifluoromethyl, phenyl or tolyl;

Base=NaH, KH, LiN(i-propyl)₂, LiN((CH₃)₃Si)₂, Na₂CO₃, K₂CO₃, Cs₂CO3, NaOH or KOH;

Z═OH;

R₁, R₂, R, W, X₁, X₂, X₃, X₄ have the meanings indicated in Claim 1.

Example 1 4-benzoxazol-2-yl-N-methyl-N-[(1R,3S)-3-(5-propyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide (“A1”)

1.1 (1S,3R)-3-(tert-Butoxycarbonyl-methyl-amino)-cyclopentanecarboxylic acid (Roberto J. Brea, Angew. Chem. Int. Ed. 2005, 44, 5710-5713) (220 mg; 0.9 mmol), butyric acid hydrazide (369.4 mg; 3.6 mmol), N-(3-dimethylamino-propyl)-N′-ethylcarbodiimid hydrochloride (346 mg; 1.81 mmol) and 1-hydroxybenzotriazole hydrate (138.5 mg; 0.9 mmol) are dissolved in 5 ml N,N-dimethylformamide and the mixture is stirred at r. t. for 18 h. The reaction solution is diluted with water (10 ml) and extracted 2× with 10 ml of ethylacetate. The combined organic layer is washed 3× with 10 ml of water and 1× with 10 ml of brine, dried over Na₂SO₄, filtered and evaporated to dryness. The residue was purified by flash chromatography (dichloro-methane:methanol 80:20) to yield 216 mg (73%) [(1R,3S)-3-(N′-butyryl-hydrazinocarbonyl)-cyclopentyl]-methyl-carbamic acid tert-butyl ester (1);

LC/MS: 350 (M+Na).

1.2 In a sealed tube was dissolved [(1R,3S)-3-(N′-butyryl-hydrazinocarbonyl)-cyclopentyl]-methyl-carbamic acid tert-butyl ester (1) (216 mg; 0.66 mmol) in 4 ml tetrahydrofuran; methyl N-(triethylammoniumsulfonyl)carbamate (Burgess reagent) (0.68 g; 2.84 mmol) was added to the solution and the reaction mixture was heated in a microwave reactor at 120° C. for 10 minutes and evaporated to dryness. The residue was purified by chromatography to yield 162 mg (79.4%) methyl-[(1R,3S)-3-(5-propyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-carbamic acid tert-butyl ester as a colorless oil; LC/MS: 310 (M+H).

1.3 To methyl-[(1R,3S)-3-(5-propyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-carbamic acid tert-butyl ester (0162 mg; 0.52 mmol) in 10 ml of dichloro-methane was added trifluoroacetic acid (2 ml; 26 mmol). The solution was stirred 2 h at room temperature and then reduced to dryness under vacuo to afford 164 mg (96.9%) methyl-[(1R,3S)-3-(5-propyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amine trifluoroacetate (2) as a colorless oil; LC/MS: 210 (M+H).

1.4 4-Benzoxazol-2-yl-benzoic acid (4) (Dinesh Kumar, Aust. J. Chem. 2008 (61) 881-887) (41.44 mg; 0.173 mmol), methyl-[(1R,3S)-3-(5-propyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amine trifluoroacetate (2) (40 mg; 0,124 mmol.), N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride for synthesis (36.58 mg; 0.186 mmol), and 1-hydroxybenzotriazole (18.95 mg; 0.124 mmol) are dissolved in 3 ml of N,N-dimethylformamide and then is added 4-methylmorpholine (54.41 μl; 0.495 mmol). The reaction mixture is stirred at r.t. for 14 h and evaporated to dryness. The residue is diluted with 10 ml of ethylacetate, filtered, the ethylacetate solution is washed with 10 ml of 5% NaHCO₃-solution, dried over Na₂SO₄, filtered, evaporated to dryness and the residue is purified by flash chromatography (dichloromethane:methanol 97:3) to yield 14 mg (26.3/%) 4-benzoxazol-2-yl-N-methyl-N-[(1R,3S)-3-(5-propyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide (“A1”) as a white solid; LC/MS: 431 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 8.27 (d, J=8.2 Hz, 2H), 7.88-7.78 (m, 2H), 7.63 (d, J=7.8 Hz, 2H), 7.45 (pd, J=7.4, 1.4 Hz, 2H), 3.44 (br. s, 1H) 2.90 (br. s, 3H), 2.79 (t, J=7.3 Hz, 2H), 2.26 (br. s, 2H), 2.14-1.79 (m, 5H), 1.70 (h, J=7.4 Hz, 2H), 0.94 (t, J=7.4 Hz, 3H).

Treatment of the amine (2) (example 1.3) with a carboxylic acid analogously to the method described above in example (1.4) leads to the following compounds

biphenyl-4-carboxylic acid methyl-[(1R,3S)-3-(5-propyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amide (“A2”)

LC/MS: 431 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 7.78-7.66 (m, 4H), 7.54-7.44 (m, 4H), 7.46-7.35 (m, 1H), 3.36 (br. s, 1H), 2.89 (s, 3H), 2.78 (t, J=7.3 Hz, 2H), 2.32-2.13 (m, 1H), 2.11-1.79 (m, 6H), 1.70 (h, J=7.4 Hz, 2H), 0.94 (t, J=7.4 Hz, 3H);

4-(4-fluoro-phenylethynyl)-N-methyl-N-[(1R,3S)-3-(5-propyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide (“A3”)

LC/MS: 432 (M+H); ¹H NMR (400 MHz, Chloroform-d₁) δ 7.56 (d, J=8.2 Hz, 2H), 7.54-7.48 (m, 2H), 7.38 (d, J=8.1 Hz, 2H), 7.06 (t, J=8.7 Hz, 2H), 3.29 (s, 1H), 2.97 (s, 3H), 2.80 (t, J=7.5 Hz, 2H), 2.21-2.01 (m, 3H), 1.81 (p, J=7.4 Hz, 2H), 1.36-1.18 (m, 4H), 1.02 (t, J=7.4 Hz, 3H);

4′-cyano-biphenyl-4-carboxylic acid methyl-[(1R,3S)-3-(5-propyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amide (“A4”)

LC/MS: 415 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 7.99-7.87 (m, 4H), 7.83 (d, J=8.2 Hz, 2H), 7.52 (d, J=8.0 Hz, 2H), 4.98, 4.24 (2×br.s, 1H, ratio=1:1.6 mixture of rotamers) 3.40 (br. s, 1H), 2.88 (s, 3H), 2.78 (t, J=7.3 Hz, 2H), 2.26 (br. s, 1H), 2.12-1.77 (m, 5H), 1.70 (q, J=7.4 Hz, 2H), 0.94 (t, J=7.4 Hz, 3H).

Example 2 4-benzoxazol-2-yl-N-[(1R,3S)-3-(5-ethyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-N-methyl-benzamide (“A5”)

2.1 Following the procedure described in Example 1.1-1.3 with propionic acid hydrazide afforded [(1R,3S)-3-(5-ethyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-methyl-amine trifluoroacetate; LC/MS: 196 (M+H).

2.2 Treatment of [(1R,3S)-3-(5-ethyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-methyl-amine trifluoroacetate with benzoxazol-2-yl-benzoic acid (4) as described above in example 1.4 leads to the title compound (“A5”); LC/MS: 417 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 8.27 (d, J=8.2 Hz, 2H), 7.88-7.78 (m, 2H), 7.63 (d, J=7.8 Hz, 2H), 7.45 (pd, J=7.4, 1.4 Hz, 2H), 5.02, 4.18 (2×br.s, 1H, ratio=1:1.6 mixture of rotamers) 3.43 (br. s, 1H), 2.90 (s, 3H), 2.82 (q, J=7.6 Hz, 2H), 2.25 (br. s, 1H), 2.14-1.73 (m, 5H), 1.25 (t, J=7.6 Hz, 3H).

Treatment of the amine [(1R,3S)-3-(5-ethyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-methyl-amine trifluoroacetate (example 2.1) with a carboxylic acid analogously to the method described above in example (1.4) leads to the following compounds

4′-cyano-biphenyl-4-carboxylic acid [(1R,3S)-3-(5-ethyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-methyl-amide (“A6”)

LC/MS: 401 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 7.99-7.88 (m, 4H), 7.83 (d, J=8.2 Hz, 2H), 7.52 (d, J=7.9 Hz, 2H), 4.98, 4.22 (2×br.s, 1H, ratio=1:1.7 mixture of rotamers) 3.40 (br. s, 1H), 2.89 (s, 3H), 2.82 (q, J=7.6 Hz, 2H), 2.24 (br. s, 1H), 2.10-1.78 (m, 5H), 1.25 (t, J=7.5 Hz, 3H);

4-(1H-benzimidazol-2-yl)-N-[(1R,3S)-3-(5-ethyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-N-methyl-benzamide (“A7”)

LC/MS: 416 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 12.97 (s, 1H; NH), 8.23 (d, J=8.0 Hz, 2H), 7.68 (d, J=7.7 Hz, 1H), 7.63-7.45 (m, 3H), 7.29-7.14 (m, 2H), 5.01, 4.22 (2×br.s, 1H, ratio=1:1.6 mixture of rotamers) 3.44 (br. s, 1H), 2.90 (s, 3H), 2.82 (q, J=7.5 Hz, 2H), 2.27 (br. s, 1H), 2.13-1.77 (m, 5H), 1.25 (t, J=7.5 Hz, 3H);

N-[(1R,3S)-3-(5-ethyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-N-methyl-4-pyridin-4-yl-benzamide (“A8”)

LC/MS: 377 (M+H); H NMR (400 MHz, DMSO-d₆) δ 8.68 (d, J=6.1 Hz, 2H), 7.90 (d, J=8.3 Hz, 2H), 7.77 (d, J=6.2 Hz, 2H), 7.55 (d, J=8.0 Hz, 2H), 5.03, 4.24 (2×br.s, 1H, ratio=1:1.9 mixture of rotamers) 3.42 (br. s, 1H), 2.90 (s, 3H), 2.83 (q, J=7.6 Hz, 1H), 2.25 (br. s, 1H), 2.14-1.79 (m, 5H), 1.26 (t, J=7.6 Hz, 3H).

Example 3 4-benzoxazol-2-yl-N-[(1R,3S)-3-(5-isopropyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-N-methyl-benzamide (“A9”)

3.1 Following the procedure described in Example 1.1-1.3 with isobutyric acid hydrazide afforded [(1R,3S)-3-(5-isopropyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-methyl-amine trifluoroacetate; LC/MS: 210 (M+H).

3.2 Treatment of the amine [(1R,3S)-3-(5-isopropyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-methyl-amine trifluoroacetate with benzoxazol-2-yl-benzoic acid (4) as described above in example 1.4 leads to the title compound (“A9”).

LC/MS: 431 (M+H); ¹H NMR (400 MHz, DMSO-d₆) δ 8.28 (d, J=8.3 Hz, 2H), 7.91-7.78 (m, 2H), 7.64 (d, J=8.1 Hz, 2H), 7.53-7.39 (m, 2H), 4.99, 4.18 (2×br.s, 1H, ratio=1:1.3 mixture of rotamers), 3.17 (p, J=6.9 Hz, 1H), 2.91 (s, 3H), 2.27 (br. s, 1H), 2.14-1.79 (m, 5H), 1.30 (d, J=7.0 Hz, 6H).

Treatment of the amine afforded [(1R,3S)-3-(5-isopropyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-methyl-amine trifluoroacetate (example 3.1) with a carboxylic acid analogously to the method described above in example 1.4 leads to the following compounds

4′-cyano-biphenyl-4-carboxylic acid [(1R,3S)-3-(5-isopropyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-methyl-amide (“A10”)

LC/MS: 415 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 8.00-7.87 (m, 4H), 7.83 (d, J=8.2 Hz, 2H), 7.52 (d, J=8.0 Hz, 2H), 5.00, 4.24 (2×br.s, 1H, ratio=1:1.7 mixture of rotamers) 3.37 (br. s, 1H), 3.15 (p, J=6.9 Hz, 1H), 2.89 (s, 3H), 2.25 (br. s, 1H), 2.13-1.79 (m, 5H), 1.29 (d, J=7.0 Hz, 6H);

4-(1H-benzimidazol-2-yl)-N-[(1R,3S)-3-(5-isopropyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-N-methyl-benzamide (“A11”)

LC/MS: 430 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 12.98 (s, 1H), 8.23 (d, J=8.2 Hz, 2H), 7.66 (s, 1H), 7.60-7.44 (m, 3H), 7.27-7.16 (m, 2H), 5.01, 4.22 (2×br.s, 1H, ratio=1:1.4 mixture of rotamers) 3.34 (br. s, 1H), 3.16 (p, J=6.9 Hz, 1H), 2.90 (s, 3H), 2.26 (br. s, 1H), 2.15-1.76 (m, 5H), 1.29 (d, J=6.9 Hz, 6H);

N-[(1R,3S)-3-(5-isopropyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-N-methyl-4-pyridin-4-yl-benzamide (“A12”)

LC/MS: 430 (M+H); H NMR (400 MHz, DMSO-d₆) δ 8.66 (d, J=6.1 Hz, 2H), 7.88 (d, J=8.3 Hz, 2H), 7.75 (d, J=6.2 Hz, 2H), 7.53 (d, J=8.0 Hz, 2H), 4.98, 4.22 (2×br.s, 1H, ratio=1:1.6 mixture of rotamers) 3.29 (br. s, 1H), 3.16 (p, J=6.9 Hz, 1H), 2.89 (s, 3H), 2.24 (br. s, 1H), 2.12-1.79 (m, 5H), 1.29 (d, J=7.0 Hz, 6H).

Example 4 4-benzoxazol-2-yl-N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide (“A13”)

4.1 Following the procedure described in Example 1.1-1.3 with acetic acid hydrazide afforded methyl-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amine trifluoroacetate; LC/MS: 182 (M+H).

4.2 Treatment of methyl-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amine trifluoroacetate (example 4.1) with benzoxazol-2-yl-benzoic acid (4) as described above in example 1.4 leads to the title compound (“A13”); LC/MS: 403 (M+H); ¹H NMR (400 MHz, DMSO-d₆) δ 8.28 (d, J=8.4 Hz, 2H), 7.90-7.79 (m, 2H), 7.64 (d, J=8.1 Hz, 2H), 7.51-7.40 (m, 2H), 5.05, 4.19 (2×br.s, 1H, ratio=1:1.8 mixture of rotamers), 2.90 (s, 3H), 2.47 (s, 3H), 2.27 (br. s, 1H), 2.16-1.81 (m, 5H).

Treatment of methyl-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amine trifluoroacetate (example 4.1) with a carboxylic acid analogously to the method described above in example 1.4 leads to the following compounds

4-benzothiazol-2-yl-N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide (“A14”)

LC/MS: 419 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 8.24-8.12 (m, 3H), 8.09 (d, J=8.1 Hz, 1H), 7.63-7.53 (m, 3H), 7.49 (t, J=8.1 Hz, 1H), 5.02, 4.21 (2×br.s, 1H, ratio=1:1.4 mixture of rotamers) 3.36 (br. s, 1H), 2.89 (s, 3H), 2.46 (s, 3H), 2.25 (br. s, 1H), 2.14-1.79 (m, 5H);

N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-4-pyridin-4-yl-benzamide (“A15”)

LC/MS: 363 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 8.68 (d, J=6.1 Hz, 2H), 7.89 (d, J=8.2 Hz, 2H), 7.78 (d, J=6.2 Hz, 2H), 7.54 (d, J=8.0 Hz, 2H), 4.98, 4.22 (2×br.s, 1H, ratio=1:1.8 mixture of rotamers), 2.89 (s, 3H), 2.45 (s, 3H), 2.24 (br. s, 1H), 2.13-1.79 (m, 5H);

4′-chloro-biphenyl-4-carboxylic acid methyl-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amide (“A16”)

LC/MS: 396 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 7.74 (d, J=8.5 Hz, 4H), 7.54 (d, J=8.6 Hz, 2H), 7.48 (d, J=8.1 Hz, 2H), 4.96, 4.27 (2×br.s, 1H, ratio=1:1.3 mixture of rotamers), 3.33 (br. s, 1H), 2.88 (s, 3H), 2.46 (s, 3H), 2.23 (br. s, 1H), 2.12-1.75 (m, 5H);

4-(1H-benzimidazol-2-yl)-N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide (“A17”)

LC/MS: 402 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 12.98 (s, 1H; NH), 8.23 (d, J=8.3 Hz, 2H), 7.60 (br. s, 2H), 7.56 (d, J=8.0 Hz, 2H), 7.27-7.13 (m, 2H), 4.98, 4.19 (2×br.s, 1H, ratio=1:1.5 mixture of rotamers), 2.89 (s, 3H), 2.46 (s, 3H), 2.25 (br. s, 1H), 2.14-1.75 (m, 5H);

4-benzoxazol-2-yl-3-methoxy-N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide (“A18”)

LC/MS: 433 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 8.09 (d, J=7.8 Hz, 1H), 7.83 (d, J=7.2 Hz, 1H), 7.78 (d, J=7.5 Hz, 1H), 7.43 (p, J=7.1 Hz, 2H), 7.24 (s, 1H), 7.13 (d, J=7.6 Hz, 1H), 3.98 (s, 3H), 5.02, 4.21 (2×br.s, 1H, ratio=1:1.3 mixture of rotamers), 3.44 (br. s, 1H), 2.91 (br. s, 3H), 2.46 (s, 3H), 2.25 (br. s, 1H), 2.13-1.76 (m, 5H);

4-(5-chloro-benzoxazol-2-yl)-N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide (“A19”)

LC/MS: 437 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 8.26 (d, J=8.2 Hz, 2H), 7.96 (d, J=2.0 Hz, 1H), 7.86 (d, J=8.7 Hz, 1H), 7.63 (d, J=7.6 Hz, 2H), 7.50 (dd, J=8.7, 2.1 Hz, 1H), 5.00, 4.17 (2×br.s, 1H, ratio=1:1.2 mixture of rotamers), 3.42 (br. s, 1H), 2.90 (s, 3H), 2.46 (s, 3H), 2.24 (br. s, 1H), 2.13-1.74 (m, 5H);

4-imidazo[1,2-a]pyrimidin-2-yl-N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide (“A20”)

LC/MS: 403 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 8.98 (d, J=8.6 Hz, 1H), 8.54 (dd, J=4.1, 2.0 Hz, 1H), 8.43 (s, 1H), 8.07 (d, J=8.2 Hz, 2H), 7.48 (d, J=8.0 Hz, 2H), 7.07 (dd, J=6.7, 4.1 Hz, 1H), 4.96, 4.30 (2×br.s, 1H, ratio=1:1.7 mixture of rotamers), 3.33 (br. s, 1H), 2.89 (s, 3H), 2.46 (s, 3H), 2.25 (br. s, 1H), 2.11-1.80 (m, 5H);

4-(4-chloro-phenylethynyl)-N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide (“A21”)

LC/MS: 420 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 7.62 (d, J=8.2 Hz, 2H), 7.60 (d, J=8.5 Hz, 2H), 7.51 (d, J=8.5 Hz, 2H), 7.44 (d, J=7.8 Hz, 2H), 4.97, 4.14 (2×br.s, 1H, ratio=1:1.4 mixture of rotamers), 2.86 (s, 3H), 2.45 (s, 3H), 2.21 (br. s, 1H), 2.11-1.73 (m, 5H);

N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-4-pyridin-4-ylethynyl-benzamide (“A22”)

LC/MS: 387 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 8.64 (d, J=6.0 Hz, 2H), 7.68 (d, J=8.1 Hz, 2H), 7.54 (d, J=6.0 Hz, 2H), 7.47 (d, J=7.7 Hz, 2H), 4.98, 4.11 (2×br.s, 1H, ratio=1:1.7 mixture of rotamers), 3.38 (br. s, 1H), 2.86 (s, 3H), 2.46 (br. s, 3H), 2.21 (s, 1H), 2.11-1.71 (m, 5H);

5-benzoxazol-2-yl-pyridine-2-carboxylic acid methyl-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amide (“A23”)

LC/MS: 404 (M+H); ¹H NMR (500 MHz, DMSO-d₆) (mixture of rotamers) δ 9.36 (s, 1H), 8.65 (d, J=10.0 Hz, 1H), 7.87 (dd, J=15.9, 7.8 Hz, 2H), 7.78 (t, J=9.3 Hz, 1H), 7.48 (dt, J=15.7, 7.3 Hz, 2H), 5.05, 4.20 (2×m), 3.48, 3.25 (2×m), 2.96, 2.86 (2×s, 3H), 2.47, 2.45 (2×s, 3H), 2.40-2.20 (m, 1H), 2.09-1.80 (m, 5H);

biphenyl-4-carboxylic acid methyl-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amide (“A24”)

LC/MS: 362 (M+H); ¹H NMR (400 MHz, DMSO-d₆) δ 7.74 (dd, J=11.5, 7.8 Hz, 4H), 7.51 (t, J=7.7 Hz, 4H), 7.41 (t, J=7.3 Hz, 1H), 4.98, 4.30 (2×br.s, 1H, ratio=1:1.8 mixture of rotamers), 3.35 (br. s, 1H), 2.90 (s, 3H), 2.47 (s, 3H), 2.24 (br. s, 1H), 2.13-1.78 (m, 5H);

4′-cyano-biphenyl-4-carboxylic acid methyl-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amide (“A25”)

LC/MS: 387 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 7.97-7.90 (m, 4H), 7.83 (d, J=8.2 Hz, 2H), 7.52 (d, J=7.9 Hz, 2H), 4.98, 4.24 (2×br.s, 1H, ratio=1:1.8 mixture of rotamers), 2.89 (s, 3H), 2.46 (s, 3H), 2.23 (br. s, 1H), 2.10-1.72 (m, 5H).

GENERAL SYNTHESIS 2 OXAZOL SYNTHESIS

R⁷ denotes H, A, [C(R³)₂]_(n)Ar¹;

Z═OH; R₁, R₂, R, X₁, X₂, X₃, X₄ have the meanings indicated in Claim 1.

Example 5 4-benzoxazol-2-yl-N-methyl-N-[(1R,3S)-3-(5-methyl-oxazol-2-yl)-cyclopentyl]-benzamide (“A26”)

5.1 (1S,3R)-3-(tert-Butoxycarbonyl-methyl-amino)-cyclopentanecarboxylic acid (Roberto J. Brea, Angew. Chem. Int. Ed. 2005, 44, 5710-5713) (220 mg; 0.9 mmol), propargylamine (74.43 μl; 1.08 mmol), N-(3-dimethylaminopropyl)-N′-ethylcarbodiimid hydrochloride (260 mg; 1.36 mmol) and 1-hydroxybenzotriazole hydrate (138.5 mg; 0.9 mmol) were dissolved in 5 ml N,N-dimethylformamide and the mixture was stirred at r. t. for 18 h. The reaction solution was concentrated at reduced pressure. The residue was diluted with 5% aqueous sodium hydrogen carbanate (10 ml) and extracted 3× with 10 ml ethylacetate. The combined organic layers were dried over Na₂SO₄, filtered and evaporated to dryness. The residue was purified by flash chromatography (dichloromethane:methanol 97:3) to yield 237 mg (93.5%) methyl-((1R,3S)-3-prop-2-ynylcarbamoyl-cyclopentyl)-carbamic acid tert-butyl ester; LC/MS: 303 (M+Na).

5.2 Methyl-((1R,3S)-3-prop-2-ynylcarbamoyl-cyclopentyl)-carbamic acid tert-butyl ester (237 mg; 0.84 mmol) and gold(III)chloride (25.6 mg (0.084 mmol) were combined in acetonitrile (5 mL) and stirred at 50° C. for 16 h. The reaction solution was evaporated to dryness and the residue was purified by flash chromatography (dichloromethane:methanol 98:2) to yield 146 mg (61.6%) methyl-[(1R,3S)-3-(5-methyl-oxazol-2-yl)-cyclopentyl]-carbamic acid tert-butyl ester as a colorless oil; LC/MS: 281 (M+H).

5.3 Treatment of the methyl-[(1R,3S)-3-(5-methyl-oxazol-2-yl)-cyclopentyl]-carbamic acid tert-butyl ester (example 5.2) with trifluoroacetic acid in dichloromethane analogously to the method described above in example 1.3 leads to methyl-[(1R,3S)-3-(5-methyl-oxazol-2-yl)-cyclopentyl]-amine trifluoroacetate as a pale yellow oil; LC/MS: 181 (M+H).

5.4 Treatment of methyl-[(1R,3S)-3-(5-methyl-oxazol-2-yl)-cyclopentyl]-amine trifluoroacetate (example 5.3) with benzoxazol-2-yl-benzoic acid (4) as described above in example 1.4 leads to the title compound (“A26”); LC/MS: 402 (M+H); ¹H NMR (400 MHz, DMSO-d₆) δ 8.28 (d, J=8.3 Hz, 2H), 7.91-7.75 (m, 2H), 7.63 (d, J=8.1 Hz, 2H), 7.53-7.36 (m, 2H), 6.71 (s, 1H), 4.99, 4.15 (2×br.s, 1H, ratio=1:1.7 mixture of rotamers), 3.14 (br. s, 1H), 2.91 (s, 3H), 2.26 (s, 3H), 2.21 (br. s, 1H), 2.13-1.72 (m, 5H).

Example 6 4-benzoxazol-2-yl-N-methyl-N-[(1R,3S)-3-(4-methyl-oxazol-2-yl)-cyclopentyl]-benzamide (“A27”)

6.1 (1S,3R)-3-(tert-Butoxycarbonyl-methyl-amino)-cyclopentanecarboxylic acid (Roberto J. Brea, Angew. Chem. Int. Ed. 2005, 44, 5710-5713) (220 mg; 0.9 mmol), ammonium chloride (145.11 mg; 2.7 mmol), N-(3-dimethylaminopropyl)-N′-ethylcarbodiimid hydrochloride (260 mg; 1.36 mmol), 1-hydroxybenzotriazole hydrate (138.5 mg; 0.9 mmol) and 4-methylmorpholine were dissolved in 5 ml N,N-dimethylformamide and the mixture was stirred at r. t. for 18 h. The reaction solution was concentrated at reduced pressure, the residue was diluted with 5% aqueous sodium hydrogen carbanate (10 ml) and extracted 3× with 10 ml ethylacetate. The combined organic layers were dried over Na₂SO₄, filtered and evaporated to dryness. The residue was purified by flash chromatography (dichloromethane:methanol 95:5) to yield 180 mg (82.2%) ((1R,3S)-3-carbamoyl-cyclopentyl)-methyl-carbamic acid tert-butyl ester, LC/MS: 265 (M+Na).

6.2 ((1R,3S)-3-Carbamoyl-cyclopentyl)-methyl-carbamic acid tert-butyl ester (180 mg; 0.74 mmol) and chloroacetone (179.3 mg; 2.23 mmol) were combined in ethanol (1 mL) and stirred at reflux for 65 h. The reaction solution was evaporated to dryness and the residue was purified by flash chromatography (dichloromethane:methanol 90:10) to yield 165 mg (79.3%) methyl-[(1R,3S)-3-(4-methyl-oxazol-2-yl)-cyclopentyl]-carbamic acid tert-butyl ester as a yellow oil; LC/MS: 281 (M+H).

6.3 Treatment of the methyl-[(1R,3S)-3-(4-methyl-oxazol-2-yl)-cyclopentyl]-carbamic acid tert-butyl ester (example 6.2) with trifluoroacetic acid in dichloromethane analogously to the method described above in example 1.3 leads to methyl-[(1R,3S)-3-(4-methyl-oxazol-2-yl)-cyclopentyl]-amine trifluoroacetate as a brown oil; LC/MS: 181 (M+H); ¹H NMR (400 MHz, DMSO-d₆) δ 8.58 (s, 2H; NH₂ ⁺), 7.69 (s, 1H), 3.56 (dt, J=13.6, 6.5 Hz, 1H), 3.33-3.20 (m, 1H), 2.58 (t, J=5.5 Hz, 3H), 2.45 (dd, J=13.9, 6.5 Hz, 1H), 2.12-1.98 (m, 5H), 1.96-1.82 (m, 2H), 1.81-1.70 (m, 1H).

6.4 Treatment of methyl-[(1R,3S)-3-(4-methyl-oxazol-2-yl)-cyclopentyl]-amine trifluoroacetate (example 6.3) with benzoxazol-2-yl-benzoic acid (4) as described above in example 1.4 leads to the title compound (“A27”); LC/MS: 402 (M+H); ¹H NMR (400 MHz, DMSO-d₆) δ 8.28 (d, J=8.3 Hz, 2H), 7.90-7.76 (m, 2H), 7.68 (s, 1H), 7.63 (d, J=8.0 Hz, 2H), 7.52-7.40 (m, 2H), 4.99, 4.15 (2×br.s, 1H, ratio=1:1.6 mixture of rotamers), 3.14 (br. s, 1H), 2.91 (s, 3H), 2.22 (br. s, 1H), 2.06-1.74 (m, 5H).

Example 7 4-benzoxazol-2-yl-N-methyl-N-[(1R,3S)-3-(3-methyl-[1,2,4]oxadiazol-5-yl)-cyclopentyl]-benzamide (“A28”)

7.1 (1S,3R)-3-(tert-Butoxycarbonyl-methyl-amino)-cyclopentanecarboxylic acid (Roberto J. Brea, Angew. Chem. Int. Ed. 2005, 44, 5710-5713) (500 mg; 2.05 mmol), N-hydroxy-acetamidine (228.37 mg; 3.1 mmol), N-(3-dimethyl-aminopropyl)-N′-ethylcarbodiimidhydrochlorid (590.9 mg; 3.1 mmol), 1-hydroxybenzotriazole hydrate (314.7 mg; 2.05 mmol) and 4-methylmorpholine (677.83 μl) were dissolved in 10 ml N,N-dimethylformamide and the mixture was stirred at r. t. for 18 h. The reaction solution was concentrated at reduced pressure, the residue was diluted with 5% aqueous sodium hydrogen carbanate (10 ml) and extracted 3× with 10 ml ethylacetate. The combined organic layers were dried over Na₂SO₄, filtered and evaporated to dryness to yield 680 mg (97.3%) [(E)-1-aminoethylideneamino] (1 S,3R)-3-[tert-butoxy-carbonyl(methyl)amino]cyclopentanecarboxylate as a colorless oil; LC/MS: 322 (M+Na).

7.2 [(E)-1-aminoethylideneamino] (1S,3R)-3-[tert-butoxycarbonyl(methyl)-amino]cyclopentanecarboxylate (480 mg; 1.6 mmol) and sodium acetate anhydrous (144.7 mg; 1.76 mmol) were combined in ethanol (5 mL) and water (1 ml) and stirred at 80° C. for 18 h. The reaction mixture was poured into 100 ml water and extracted 2×100 ml ethylacetate. The combined organic layers were dried over Na₂SO₄, filtered and evaporated under reduced pressure. The residue was purified by flash chromatography (dichloromethane:methanol 90:10) to yield 240 mg (36.2%) methyl-[(1R,3S)-3-(3-methyl-[1,2,4]oxadiazol-5-yl)-cyclopentyl]-carbamic acid tert-butyl ester as a colorless oil; LC/MS: 182 (M+H-BOC).

7.3 Treatment of the methyl-[(1R,3S)-3-(3-methyl-[1,2,4]oxadiazol-5-yl)-cyclopentyl]-carbamic acid tert-butyl ester (example 7.2) with trifluoroacetic acid in dichloromethane analogously to the method described above in example 1.3 leads to methyl-[(1R,3S)-3-(3-methyl-[1,2,4]oxadiazol-5-yl)-cyclopentyl]-amine trifluoroacetate as a a colorless oil; LC/MS: 182 (M+H).

7.4 Treatment of methyl-[(1R,3S)-3-(3-methyl-[1,2,4]oxadiazol-5-yl)-cyclopentyl]-amine trifluoroacetate (example 7.3) with benzoxazol-2-yl-benzoic acid (4) as described above in example 1.4 leads to the title compound (“A28”); LC/MS: 403 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 8.34-8.18 (m, 2H), 7.83 (dd, J=14.6, 7.3 Hz, 2H), 7.63 (d, J=7.7 Hz, 2H), 7.45 (pd, J=7.4, 1.3 Hz, 2H), 5.02, 4.20 (2×br.s, 1H, ratio=1:1.8 mixture of rotamers), 3.64, 3.48 (2×br.s, 1H, ratio=1:1.6 mixture of rotamers), 2.90 (br. s, 3H), 2.32 (s, 3H), 2.31-2.14 (m, 2H), 2.11-1.83 (m, 4H).

Example 8 (rac)-cis-biphenyl-4-carboxylic acid [-3-(4-cyclopropyl-[1,2,3]triazol-1-yl)-cyclopentyl]-methyl-amide (“A29”)

8.1 Treatment of (rac)-trans-3-amino-cyclopentanol hydrochloride with biphenyl-4-carboxylic acid as described above in example 1.4 leads to trans-biphenyl-4-carboxylic acid-(3-hydroxy-cyclopentyl)-amide as pale beige crystals; LC/MS: 282 (M+H); ¹H NMR (400 MHz, DMSO-d₆) δ 8.30 (d, J=7.4 Hz, 1H; NH), 7.93 (d, J=8.2 Hz, 2H), 7.84-7.65 (m, 4H), 7.49 (t, J=7.5 Hz, 2H), 7.40 (t, J=7.3 Hz, 1H), 4.57-4.37 (m, 2H), 4.23 (s, 1H), 2.15-1.99 (m, 1H), 2.00-1.78 (m, 2H), 1.72 (ddd, J=13.4, 7.9, 5.9 Hz, 1H), 1.61-1.36 (m, 2H).

8.2 The suspension of trans-biphenyl-4-carboxylic acid-(3-hydroxy-cyclopentyl)-amide (1.46 g; 5.19 mmol) and triethylamine (1.44 ml) in acetone (40 ml) was cooled to 0° C. and treated dropwise with methanesulfonyl chloride (0.60 ml; 7.78 mmol). The suspension was stirred for 2 h at 0° C. and 18 h at r.t., filtered and the filtrate was concentrated at reduced pressure. The residue was diluted with 5% aqueous sodium hydrogen carbanate (10 ml) and extracted 3× with 10 ml methylene chloride. The combined organic layers were dried over Na₂SO₄, filtered, evaporated to dryness and the residue was purified by flash chromatography to yield 0.85 g (44.7%) (rac)-trans-methanesulfonic acid-3-[(biphenyl-4-carbonyl)-amino]-cyclopentyl ester as a white solid; LC/MS: 360 (M+H).

8.3 The solution of (rac)-trans-methanesulfonic acid-3-[(biphenyl-4-carbonyl)-amino]-cyclopentyl ester (0.84 g; 2.34 mmol) in N,N-dimethylformamide (10 ml) and water (1.5 ml) was treated with sodium azide (0.21 g; 3.23 mol) and the reaction mixture was stirred at 100° C. for 45 min and evaporated to dryness. The residue was purified by flash chromatography (dichloromethane:ethyl acetate 96:4) to yield 167 mg (23.6%) (rac)-cis-biphenyl-4-carboxylic acid-3-azido-cyclopentyl)-amide as white crystals; LC/MS: 307 (M+H).

8.4 The solution of (rac)-cis-biphenyl-4-carboxylic acid-3-azido-cyclopentyl)-amide (167 mg; 0.54 mmol) in tetrahydrofurane (10 ml) was cooled to 0° C., treated with sodium hydride (60% suspension in paraffin oil) (65.41 mg; 1.63 mmol) and stirred at 0° C. for 30 min. Iodomethane (232.1 mg; 1.63 mmol) was added and the resulting mixture was stirred over night at r.t. The reaction mixture was poured into 20 ml water and extracted 3× with 20 ml ethyl acetate. The combined organic layers were dried over Na₂SO₄, filtered and evaporated under reduced pressure. The residue was purified by flash chromatography (ethyl acetate:n-heptane 1:1) to yield 116 mg (66.4%) (rac)-cis-biphenyl-4-carboxylic acid-3-azido-cyclopentyl)-methyl-amide as a white solid; LC/MS: 321 (M+H).

8.5 The suspension of (rac)-cis-biphenyl-4-carboxylic acid-3-azido-cyclopentyl)-methyl-amide (30 mg; 0.09 mmol) in water (0.45 ml) and tert.-butanol (0.45 ml) was treated with copper fine powder (4.76 mg; 0.075 mmol), 1M copper(II) sulfate-solution in water (18.73 μl; 0.02 mmol) and ethynyl-cyclopropane (6.5 mg; 0.1 mmol), stirred in a microwave reactor at 125° C. for 10 minutes and evaporated to dryness. The residue was diluted with 5% aqueous sodium hydrogen carbanate (10 ml) and extracted 3× with 10 ml ethyl acetate. The combined organic layers were washed with brine (10 ml), dried over Na₂SO₄, filtered, evaporated to dryness and the residue was purified by flash chromatography to yield The residue was purified by chromatography (dichloromethane:methanol 95:5) to yield 27 mg (74.6%) (rac)-cis-biphenyl-4-carboxylic acid [-3-(4-cyclopropyl-[1,2,3]triazol-1-yl)-cyclopentyl]-methyl-amide (“A29”) as a white foam; LC/MS: 387 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 7.80 (br. s, 1H), 7.72 (t, J=7.9 Hz, 4H), 7.53-7.43 (m, 4H), 7.40 (t, J=7.4 Hz, 1H), 5.15, 4.48 (2×br.s, 1H, ratio=1:2.7 mixture of rotamers), 5.06 (s, 1H), 2.92 (s, 3H), 2.41-2.24 (m, 2H), 2.20 (br. s, 1H), 2.12-1.70 (m, 4H), 0.84 (br. s, 2H), 0.65 (br. s, 2H).

(rac)-cis-biphenyl-4-carboxylic acid methyl-[3-(4-propyl-[1,2,3]triazol-1-yl)-cyclopentyl]-amide (“A30”)

Treatment of the of (rac)-cis-biphenyl-4-carboxylic acid-3-azido-cyclopentyl)-methyl-amide (example 8.4) with 1-pentyne analogously to the method described above in example 8.5 leads to (rac)-cis-biphenyl-4-carboxylic acid methyl-[3-(4-propyl-[1,2,3]triazol-1-yl)-cyclopentyl]-amide (“A30”); LC/MS: 387 (M+H); ¹H NMR (400 MHz, DMSO-d₆) δ 7.81 (br. s, 1H), 7.75-7.67 (m, 4H), 7.54-7.43 (m, 4H), 7.43-7.36 (m, 1H), 5.08 (s, 1H), 4.53 (br. s, 1H), 2.92 (s, 3H), 2.44-2.26 (m, 2H), 2.20 (br. s, 1H), 2.11-1.80 (m, 3H), 1.55 (br. s, 2H), 0.86 (br. s, 3H).

biphenyl-4-carboxylic acid {(1R,3S)-3-[4-((S)-1-hydroxy-ethyl)-[1,2,3]triazol-1-yl]-cyclopentyl}-methyl-amide (“A31”)

Treatment of the of (rac)-cis-biphenyl-4-carboxylic acid-3-azido-cyclopentyl)-methyl-amide (example 8.4) with (S)-(−)-3-butyn-2-ol analogously to the method described above in example 8.5 leads to diastereomeric mixture of biphenyl-4-carboxylic acid {(1R,3S)-3-[4-((S)-1-hydroxy-ethyl)-[1,2,3]triazol-1-yl]-cyclopentyl}-methyl-amide (“A31”) and biphenyl-4-carboxylic acid {(1S,3R)-3-[4-((S)-1-hydroxy-ethyl)-[1,2,3]triazol-1-yl]-cyclopentyl}-methyl-amide as a byproduct; LC/MS: 391 (M+H); ¹H NMR (500 MHz, DMSO-d₆) δ 7.92 (br. s, 1H), 7.71 (dd, J=9.6, 7.8 Hz, 4H), 7.53-7.43 (m, 4H), 7.40 (t, J=7.4 Hz, 1H), 5.12 (br. s, 2H), 4.77 (br. s, 1H), 2.93 (s, 3H), 2.43-2.27 (m, 2H), 2.22 (br. s, 1H), 2.12-1.80 (m, 3H), 1.36 (br. s, 3H).

Pharmacological Data

TABLE 1 Inhibition of FASN of some representative compounds of the formula I Compound IC₅₀ FASN No. (enzyme assay) “A1” A “A2” A “A3” A “A4” A “A5” A “A6” A “A7” A “A8” B “A9” A “A10” A “A11” A “A12” B “A13” A “A14” A “A15” B “A16” A “A17” A “A18” A “A19” A “A20” — “A21” A “A22” B “A23” B “A24” A “A25” A “A26” A “A27” B “A28” −38% @30 μM “A29” C “A30” C “A31” — IC₅₀: <0.3 μM = A 0.3-3 μM = B 3-50 μM = C

The compounds shown in Table 1 are particularly preferred compounds according to the invention.

The following examples relate to medicaments:

Example A: Injection Vials

A solution of 100 g of an active ingredient of the formula I and 5 g of disodium hydrogenphosphate in 3 l of bidistilled water is adjusted to pH 6.5 using 2 N hydrochloric acid, sterile filtered, transferred into injection vials, lyophilised under sterile conditions and sealed under sterile conditions.

Each injection vial contains 5 mg of active ingredient.

Example B: Suppositories

A mixture of 20 g of an active ingredient of the formula I with 100 g of soya lecithin and 1400 g of cocoa butter is melted, poured into moulds and allowed to cool. Each suppository contains 20 mg of active ingredient.

Example C: Solution

A solution is prepared from 1 g of an active ingredient of the formula I, 9.38 g of NaH₂PO₄.2 H₂O, 28.48 g of Na₂HPO₄.12 H₂O and 0.1 g of benzalkonium chloride in 940 ml of bidistilled water. The pH is adjusted to 6.8, and the solution is made up to 1 l and sterilised by irradiation. This solution can be used in the form of eye drops.

Example D: Ointment

500 mg of an active ingredient of the formula I are mixed with 99.5 g of Vaseline under aseptic conditions.

Example E: Tablets

A mixture of 1 kg of active ingredient of the formula I, 4 kg of lactose, 1.2 kg of potato starch, 0.2 kg of talc and 0.1 kg of magnesium stearate is pressed in a conventional manner to give tablets in such a way that each tablet contains 10 mg of active ingredient.

Example F: Dragees

Tablets are pressed analogously to Example E and subsequently coated in a conventional manner with a coating of sucrose, potato starch, talc, tragacanth and dye.

Example G: Capsules

2 kg of active ingredient of the formula I are introduced into hard gelatine capsules in a conventional manner in such a way that each capsule contains 20 mg of the active ingredient.

Example H: Ampoules

A solution of 1 kg of active ingredient of the formula I in 60 l of bidistilled water is sterile filtered, transferred into ampoules, lyophilised under sterile conditions and sealed under sterile conditions. Each ampoule contains 10 mg of active ingredient. 

1. Compounds of the formula I

in which R denotes Ar or —C≡C—Ar, W denotes furanyl, thiophenyl, pyrrolyl, pyrazolyl, oxazolyl, thiazolyl, triazolyl, oxadiazolyl or thiadiazolyl, each of which is unsubstituted or mono- or disubstituted by R², R¹ denotes A, [C(R³)₂]_(n)Ar¹ or [C(R³)₂]_(n)Cyc, R² denotes A, [C(R³)₂]_(n)Ar¹, Cyc or ═O R⁴ denotes H, F, Cl, Br, OH, CN, NO₂, A′, OA′, SA′, SO₂Me, COA′, CONH₂, CONHA′ or CONA′₂, X¹, X², X³, X⁴ each, independently of one another, denote CH or N, A denotes unbranched or branched alkyl with 1-10 C-atoms, wherein two adjacent carbon atoms may form a double bond and/or one or two non-adjacent CH- and/or CH₂-groups may be replaced by N-, O- and/or S-atoms and wherein 1-7 H-atoms may be replaced by R⁵, Cyc denotes cycloalkyl with 3-7 C-atoms, which is unsubstituted or monosubstituted by OH, Hal or A, A′ denotes unbranched or branched alkyl with 1-6 C-atoms, wherein 1-5 H-atoms may be replaced by F, R⁵ denotes F, Cl or OH, Ar denotes phenyl, which is unsubstituted or mono-, di-, tri-, tetra- or pentasubstituted by Hal, A, O[C(R³)₂]_(n)Het¹, Ar¹, [C(R³)₂]_(p)OR³, [C(R³)₂]_(p)N(R³)₂, NO₂, CN, [C(R³)₂]_(p)COOR³, CON(R³)₂, [C(R³)₂]_(p)N(R³)₂, N(R³)₂COA, NR³SO₂A, [C(R³)₂]_(p)SO₂N(R³)₂, S(O)_(n)A, O[C(R³)₂]_(m)N(R³)₂, NHCOOA, NHCON(R³)₂ and/or COA, Ar¹ denotes phenyl or naphthyl, which is unsubstituted or mono-, di-, tri-, tetra- or pentasubstituted by Hal, A, [C(R³)₂]_(p)OR³, [C(R³)₂]_(p)N(R³)₂, NO₂, CN, [C(R³)₂]_(p)COOR³, [C(R³)₂]_(p)N(R³)₂, N(R³)₂COA, NR³SO₂A, [C(R³)₂]_(p)SO₂N(R³)₂, S(O)_(n)A, O[C(R³)₂]_(m)N(R³)₂, NHCOOA, NHCON(R³)₂ and/or COA, R³ denotes H or unbranched or branched alkyl with 1-6 C-atoms, Het denotes a mono- or bicyclic saturated, unsaturated or aromatic heterocycle having 1 to 4 N, O and/or S atoms, which is unsubstituted or mono-, di-, tri-, tetra- or pentasubstituted by Hal, A, [C(R³)₂]_(n)OA′, [C(R³)₂]_(n)N(R³)₂, SR³, NO₂, CN, COOR³, CON(R³)₂, COHet¹, NR³COA, NR³SO₂A, SO₂N(R³)₂, S(O)_(n)A, O[C(R³)₂]_(m)N(R³)₂, NHCOOA, NHCON(R³)₂, CHO, COA, ═S, ═NH, ═NA and/or ═O (carbonyl oxygen), Hal denotes F, Cl, Br or I, m denotes 1, 2 or 3, n denotes 0, 1 or 2, p denotes 0, 1, 2, 3 or 4, q 0, 1, 2 or 3, with the proviso that only one or two of X¹, X², X³, X⁴ denote N, and pharmaceutically acceptable salts, tautomers and stereoisomers thereof, including mixtures thereof in all ratios.
 2. Compounds according to claim 1 in which R⁴ denotes H or OA′, and pharmaceutically acceptable salts, tautomers and stereoisomers thereof, including mixtures thereof in all ratios.
 3. Compounds according to claim 1, in which A denotes unbranched or branched alkyl with 1-10 C-atoms, wherein 1-7 H-atoms may be replaced by R⁵, and pharmaceutically acceptable salts, tautomers and stereoisomers thereof, including mixtures thereof in all ratios.
 4. Compounds according to claim 1, in which Ar denotes phenyl, which is unsubstituted or mono-, di-, tri-, tetra- or pentasubstituted by Hal and/or CN, and pharmaceutically acceptable salts, tautomers and stereoisomers thereof, including mixtures thereof in all ratios.
 5. Compounds according to claim 1, in which Het denotes a mono- or bicyclic aromatic heterocycle having 1 to 4 N, O and/or S atoms, which is unsubstituted or mono- or disubstituted by Hal and/or [C(R³)₂]_(n)OA′, and pharmaceutically acceptable salts, tautomers and stereoisomers thereof, including mixtures thereof in all ratios.
 6. Compounds according to claim 1, in which Het denotes furyl, thienyl, pyrrolyl, imidazolyl, pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridyl, pyrimidinyl, triazolyl, tetrazolyl, oxadiazolyl, thiadiazolyl, pyridazinyl, pyrazinyl, benzoxazolyl, benzothiazolyl, benzimidazolyl, benzotriazolyl, indolyl, benzo-1,3-dioxolyl, benzodioxanyl, benzothiadiazolyl, indazolyl, benzofuranyl, quinolyl, isoquinolyl, oxazolo[5,4-b]pyridyl, imidazo[1,2-a]pyrimidinyl or oxazolo[5,4-c]pyridyl, each of which is unsubstituted or mono- or disubstituted by Hal and/or [C(R³)₂]_(n)OA′, and pharmaceutically acceptable salts, tautomers and stereoisomers thereof, including mixtures thereof in all ratios.
 7. Compounds according to claim 1, in which R denotes Ar≡C≡C—Ar, W denotes furanyl, thiophenyl, pyrrolyl, pyrazolyl, oxazolyl, thiazolyl, triazolyl, oxadiazolyl or thiadiazolyl, each of which is unsubstituted or mono- or disubstituted by R², R¹ denotes A, R² denotes A or Cyc, R⁴ denotes H or OA′, X¹, X², X³, X⁴ each, independently of one another, denote CH or N, A denotes unbranched or branched alkyl with 1-10 C-atoms, wherein 1-7 H-atoms may be replaced by R⁵, Cyc denotes cycloalkyl with 3-7 C-atoms, A′ denotes unbranched or branched alkyl with 1-6 C-atoms, R⁵ denotes OH, Ar denotes phenyl, which is unsubstituted or mono-, di-, tri-, tetra- or pentasubstituted by Hal and/or CN, Het denotes a mono- or bicyclic aromatic heterocycle having 1 to 4 N, O and/or S atoms, which is unsubstituted or mono- or disubstituted by Hal and/or [C(R³)₂]_(n)OA′, Hal denotes F, Cl, Br or I, n denotes 0, 1 or 2, q 0, 1, 2 or 3, with the proviso that only one or two of X¹, X², X³, X⁴ denote N, and pharmaceutically acceptable salts, tautomers and stereoisomers thereof, including mixtures thereof in all ratios.
 8. Compounds according to claim 1, selected from the group No. Name “A2” biphenyl-4-carboxylic acid methyl-[(1R,3S)-3-(5-propyl- [1,3,4]oxadiazol-2-yl)-cyclopentyl]-amide “A3” 4-(4-fluoro-phenylethynyl)-N-methyl-N-[(1R,3S)-3-(5-propyl- [1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide “A4” 4′-cyano-biphenyl-4-carboxylic acid methyl-[(1R,3S)-3-(5- propyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amide “A6” 4′-cyano-biphenyl-4-carboxylic acid [(1R,3S)-3-(5-ethyl- [1,3,4]oxadiazol-2-yl)-cyclopentyl]-methyl-amide “A10” 4′-cyano-biphenyl-4-carboxylic acid [(1R,3S)-3-(5-isopropyl- [1,3,4]oxadiazol-2-yl)-cyclopentyl]-methyl-amide “A16” 4′-chloro-biphenyl-4-carboxylic acid methyl-[(1R,3S)-3-(5- methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amide “A21” 4-(4-chloro-phenylethynyl)-N-methyl-N-[(1R,3S)-3-(5-methyl- [1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide “A24” biphenyl-4-carboxylic acid methyl-[(1R,3S)-3-(5-methyl- [1,3,4]oxadiazol-2-yl)-cyclopentyl]-amide “A25” 4′-cyano-biphenyl-4-carboxylic acid methyl-[(1R,3S)-3-(5- methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amide “A29” (rac)-cis-biphenyl-4-carboxylic acid [-3-(4-cyclopropyl- [1,2,3]triazol-1-yl)-cyclopentyl]-methyl-amide “A30” (rac)-cis-biphenyl-4-carboxylic acid methyl-[3-(4-propyl- [1,2,3]triazol-1-yl)-cyclopentyl]-amide “A31” biphenyl-4-carboxylic acid {(1R,3S)-3-[4-((S)-1-hydroxy-ethyl)- [1,2,3]triazol-1-yl]-cyclopentyl}-methyl-amide

and pharmaceutically acceptable salts, tautomers and stereoisomers thereof, including mixtures thereof in all ratios.
 9. Process for the preparation of compounds of the formula I according to claim 1 and pharmaceutically acceptable salts, tautomers and stereoisomers thereof, characterised in that a compound of the formula II

in which W and R¹ have the meanings indicated in claim 1, is reacted with a compound of the formula III

in which R, R⁴, X¹, X², X³, X⁴ and q have the meanings indicated in claim 1, and L denotes Cl, Br, I or a free or reactively functionally modified OH group, and/or a base or acid of the formula I is converted into one of its salts.
 10. Medicaments comprising at least one compound of the formula I of claim 1 and/or pharmaceutically acceptable salts, tautomers and stereoisomers thereof, including mixtures thereof in all ratios, and optionally an pharmaceutically acceptable carrier, excipient or vehicle.
 11. A method for the treatment and/or prevention of a condition selected from the group consisting of cancer, multiple sclerosis, cardiovascular diseases, central nervous system injury and inflammation comprising administering to a subject in need thereof, an effective amount of a compound of the formula I of claim 1 or a pharmaceutically acceptable salt, tautomer, stereoisomer thereof, or mixture thereof, in all ratios.
 12. A method according to claim 11 for the treatment and/or prevention of diseases selected from the group cancer of head, neck, eye, mouth, throat, esophagus, bronchus, larynx, pharynx, chest, bone, lung, colon, rectum, stomach, prostate, urinary bladder, uterine, cervix, breast, ovaries, testicles or other reproductive organs, skin, thyroid, blood, lymph nodes, kidney, liver, pancreas, brain, central nervous system, solid tumors and blood-borne tumors.
 13. Medicaments comprising at least one compound of the formula I of claim 1 and/or pharmaceutically acceptable salts, tautomers and stereoisomers thereof, including mixtures thereof in all ratios, and at least one further medicament active ingredient.
 14. Set (kit) consisting of separate packs of (a) an effective amount of a compound of the formula I of claim 1 and/or pharmaceutically acceptable salts, tautomers and stereoisomers thereof, including mixtures thereof in all ratios, and (b) an effective amount of a further medicament active ingredient. 